Reaction conditions of addition of acrylate with amino group

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What is the Michael addition reaction mechanism of acrylate with amine?

What is the reaction mechanism of the following reactions?

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Pitaya; pitaya; dragon fruit

Master of Chemical Engineering, China Academy of Sciences

Personally, I think there is no Michael addition reaction, which may be Mannich reaction, but it is not Mannich reaction after drawing. According to the structure of the product, I think it is probably a [3+2] cycloaddition reaction. The possible mechanism is shown in the following figure. Formaldehyde reacts with amine to produce imine, then carbon dioxide is removed, and then [3+2] cycloaddition reaction occurs with olefin. Personal guess, for reference only.

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How did you find out that your partner was cheating on you?

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I found it in the most shameful way. The husband was on a business trip, but was told that he was in the emergency room of the local hospital. It turned out that the husband and lover were too excited at the hotel private meeting and accidentally entered the hospital. I was just pregnant at that time. 0 1 late at night, I got a call from the hospital. My husband Xin Zhiyuan is in the emergency room, and strenuous exercise causes muscle tear. At first, I thought I heard wrong. Didn't Xin Zhiyuan go to Jiangsu on business? How did you end up in a local hospital and pulled a muscle in the middle of the night because of strenuous exercise? This is nonsense! On the drive to the hospital, I tried to find a reasonable explanation for this matter, but the answer was there, and I could come out at any time, making all the explanations look pale and stupid. I feel cold all over, my hands are shaking all the time and I can hardly hold the steering wheel. Xin Zhiyuan and I are college classmates. We fell in love at the age of 2 1, got married at the age of 26, got married for three years and stayed together for eight years. We love each other and hit it off at first sight. How could he do such a thing? What's more, I just got pregnant with his baby. Last week, he accompanied me to the hospital for a physical examination. Xin Zhiyuan was lying on the hospital bed with a white face. When he saw me coming in, his face turned even whiter. I glanced around, and there were no suspicious women in the ward except doctors and nurses. "What's going on? Aren't you on a business trip? " I quickly asked him, feeling a glimmer of hope in my heart, hoping that he could give me a plausible explanation. "You sign first, and I'll tell you in detail later." Xin Zhiyuan's eyes dodged, and some looked at the nurse next to him embarrassedly. The nurse handed me a notice of operation. Xin Zhiyuan's high-intensity exercise tore his legs and abdominal muscles and needed immediate surgery. When Xin Zhiyuan went for surgery, I asked the hospital to know that Xin Zhiyuan was picked up from a four-star hotel by 120 ambulance. I called this four-star hotel to inquire about the situation. The hotel's reply completely shattered my poor fantasy-last night, Xin Zhiyuan checked in with a woman. 120, that's a charming woman. He called. It seems that there is an invisible knife stirring in my insides. Only by constantly inhaling can I relieve the biting pain in my heart. I tried my best to hold the phone tightly, as if it were Xin Zhiyuan's neck. I wish it was Xin Zhiyuan's neck. I called the hotel and asked them to provide the woman's identity information. The hotel staff refused me, saying that I could not disclose the guest information. Who does Xin Zhiyuan check in with? I can only ask him himself. When Xin Zhiyuan came out of surgery, I was completely calm. The nurse settled Xin Zhiyuan and left. I helped Xin Zhiyuan cover the quilt at his feet and asked him calmly, "Who is she and how long have you been together?" Xin Zhiyuan dare not look me in the eye. He lowered his head and said nothing. It took him a long time to say sorry. I'm sorry, what's the use of saying sorry? I've been hurt, and a hundred thousand apologies can't make it up. "Who is she? How long have you been together? " I keep asking. What kind of fairy beauty made Xin Zhiyuan betray his feelings for eight years, and he was so fierce and wild that he pulled a muscle? However, Xin Zhiyuan refused to say that he would never tell the woman's name or tell me who she was. Ha ha. My heart ached, but I smiled. Who says extramarital affairs are insincere? Look, isn't this true love? Xin Zhiyuan refused to say, just to protect her? Is he afraid that I will go to her, beat her, scold her and throw sulfuric acid in her face? He thinks too little of me. "Divorce." I touched my stomach and said to him, "Xin Zhiyuan, when you are discharged from the hospital, we will go to the Civil Affairs Bureau. Xin Zhiyuan swore that he was just a fool. He begged me to forgive him, saying that our child can't live without a father, and let me forgive him for the sake of the child. He said he was just playing with that woman. This is the first time he has done such a thing, but I didn't expect to be caught so unlucky. He didn't mention that the child was fine. When he mentioned children, the grievances and anger I had been suppressing suddenly washed away the dam of reason. " I'm going to abort the baby! You don't deserve to be the father of the child! Xin Zhiyuan, I tell you, divorce! Must divorce! I won't forgive you! Never! "I growled until the nurse heard something and kicked me out of the room. I sat outside the building for a long time, and then drove home numbly. I'm not in pain anymore. The cold wind of winter night took away all my body temperature and all my emotions. When I got home, I began to count our property. Although we bought a house after marriage, my family paid 2.8 million yuan for the down payment of more than 3 million yuan, and he only paid 200,000 yuan, accounting for less than one tenth. Now the house price has risen to more than 5 million. I will give him one-tenth of the house price at the market price. He should have nothing to say. The car is my dowry, of course it belongs to me. Look at the deposit, less than 300 thousand. Xin Zhiyuan's big hole, the old lady will have surgery today, and the younger brother will open a shop tomorrow. I don't know how much money I filled in! If I was struck by lightning, I would wake up like a dream: marrying Xin Zhiyuan really lost! When I first married him, my relatives joked that Xin Zhiyuan made a lot of money. My only daughter in a first-tier city married him, a college student who came out of a ravine. This is too cheap for him. Unfortunately, at that time, all I could think about was love and water. I only see that he is smart and enterprising, has a bright future and is considerate of me. I think we are made for each other, and our feelings are stronger than gold. Reality is like a huge slap in the face. My face hurts, but my heart hurts more. Before I could sleep for a while, it was already dawn. Today is the weekend when I don't have to go to work. I just sat at my desk, looking at the books all over the desk. I have a headache and can't think. I don't know how long it took, but the doorbell at home suddenly rang. "Ding-dong, Ding-dong ..." Sounds like death warrants. Is it to check the water meter? I quickly adjusted my clothes and hair and rubbed my face before opening the door. As soon as the door opened, my prepared smile solidified. Not the uncle who checked the water meter, standing outside the door is Xin Zhiming, Xin Zhiyuan's brother. He scalded the airplane head and wore tight pants. Although he is handsome, he dresses like a tramp. "Sister-in-law, where is my brother? "He smiled and squeezed me into the living room, looked in all directions and picked up a bunch of grapes from the fruit bowl. I ignored him. I really can't say anything about Xin Zhiyuan's scandal. XinZhiMing didn't ask, he like hungry for ten life, sitting on the sofa grabbed a fruit bowl, while eating also befriend with me. I knew at a glance that he had come to borrow money again. Sure enough, after talking a lot of nonsense, Xin Zhiming began to borrow money and asked for 50 thousand. Said he wanted to shoot short videos, shoot local customs while playing, and combine hobbies with making money. This 50 thousand is the start-up capital lent to him. If it was before, I would give him thousands of dollars symbolically, not expecting him to pay it back, just to keep my ears clean. But now, Xin Zhiyuan betrayed me and gave me a green hat. How dare Xin Zhiming have the cheek to make me an idiot? What he said about making money by traveling is really beautiful. "I looked at XinZhiMing coldly in August, you just borrowed 4000 yuan from me to pay the rent. Please give me my money back first. And the 300 thousand you lent me when you opened the store. I calculated it carefully today and returned it together. ""Sister-in-law, what's the matter with you? "Xin Zhiming finally realized that the situation was wrong and looked at me carefully." Did you quarrel with my brother? ""don't call me sister-in-law, your brother and I will divorce in a few days, and when the bridge returns, it doesn't matter to your Xin family and me. "I have made it very clear, but Xinzhiming thought I had a quarrel with Xinzhiyuan and took it out on him. I talked for a long time about how good his brother is to me and how happy I am to marry his brother. The more you listen, the more you feel. I really can't stand it. Everything about Xin Zhiyuan's infidelity has been exposed. I told Xin Zhiming to leave my house at once, and I told him that my divorce with Xin Zhiyuan was certain. Xin Zhiming immediately changed his face. " Go away! Do you really think you are a pustule? Do you think my brother would marry you if you were not an only child and had several houses at home? With your looks, you can marry my brother, because your parents are rich! "I froze. Xin Zhiyuan and I got married because we took a fancy to two houses under my parents' names. Two houses, plus a local account. When I marry Xin Zhiyuan, I can struggle for at least ten years less. My heart froze into ice in an instant. No wonder he is always indifferent to me. Although he is also caring and considerate, he has no enthusiasm and passion. From the beginning of dating, we are like an old couple, and we have never been in full swing and bored together. I always thought he was natural. Now think about it, how can a man who can get a muscle strain with Xiaosan be indifferent? He is just indifferent to me. Suddenly I'm glad Xin Zhiyuan cheated on me. If he hadn't cheated, my child would have taken his surname Xin, and the money I earned would have to support his whole family. Even the property that my parents have worked so hard to buy for a lifetime should be firmly remembered by him and his family. I shuddered. Divorce. I want a divorce. I don't want to delay another minute. Get rid of Xin Zhiming, I immediately began to pack my things, pack my clothes and throw all Xin Zhiyuan's things into several boxes. As soon as he comes back, I'll tell him to leave with the box! While sorting out the study, I saw an old mobile phone that Xin Zhiyuan eliminated a few months ago. That mobile phone has only been used for a year. Seeing that it has been eliminated, I said to take it to my mother and replace her old mobile phone that has been used for more than two years. Xin Zhiyuan refused. He said that he should be filial to the elderly and buy a new one. Throwing an old mobile phone in the past is outrageous. At that time, I was quite moved and thought he was very kind to my parents. Now it seems that he won't give this old mobile phone away or sell it. There is probably something shameful in it. I'm worried that he changed the password of his mobile phone, only to find that the password is still the one he used when he turned it on. He knows that I never go through his computer and mobile phone, which is why I am so unscrupulous. Although I was psychologically prepared and opened the mobile phone photo album, I was still hit hard. Chapter 2 Revenge Begins 02 Single photo, double photo, and there is a strange woman in each photo. She has big eyes, high nose, arch eyebrows, pointed chin and a four-piece suit of internet celebrities. This mistress is really better looking than me. Jealousy gnawed at my heart like a poisonous snake. I stared at the woman's face and suddenly I had a strange feeling in my heart. This face is so much like another face in my memory! Although the eyes are getting bigger and bigger, the bridge of the nose is getting higher and higher, but the similar diamond-shaped face and the downward curled mouth feel almost the same as the person I remember! Is that her? Ten years later, is that demon going to subvert my life again? Shortness of breath and trembling hands rummaged through information in my mobile phone, trying to know the name of this woman. The name of the devil I know is Qi, a rare surname. I want to know, is this woman surnamed Qi, and is her name also Chippan? There is no paint in the address book or Pan Pan, and there is no relevant information in the notebook or folder. I can't get any clues except photos. My cousin is a network expert, very good at network tracking, and once helped the police to solve network cases. I sent him a photo of a woman with trepidation and asked him to help me check the origin of this woman. Ten years ago, my cousin didn't remember the name Chippan Pan, did she? But I still remember, always remember and never forget. That demon named Qi left a scar in my heart, a bloody and ferocious scar, which will never disappear or heal in my life. I've been fidgeting all day. I walked around the room like a trapped animal, and I couldn't even sit down quietly with a sip of water. My nerves are stretched into filaments and are about to break. My cousin didn't contact me until evening. He sent me a WeChat with the woman's name, ID number, work unit, current address and her registered accounts on several social platforms. "Why did you check her?" My cousin asked me. He really doesn't remember. I told him that this woman cheated me of a sum of money through purchasing and I was going to ask her for it back. I don't want my cousin involved in this mess. When I saw the words "Chippan Pan" on WeChat, I made up my mind to confirm that this mistress is the devil. I want to get my old debt back ten years ago. I will execute the unfinished justice in those days. I want her dead. Those days and nights when blood can't flow in vain and life is worse than death, all the pain and sadness must be answered! Everyone should pay for their actions, no one is an exception. God has no eyes, so let me take its place! I tried to calm myself down. I carefully studied these photos one by one, studied the footprints left by Chippan on social platforms, and searched all the information related to her. I studied the woman's preferences, described her movements, and even tracked her ex-boyfriend and her ex-boyfriend's social accounts. I never knew I had the potential of Sherlock Holmes. Qi looks very quiet on the internet. At that time, the devil shared sad literary sentences on the Weibo every day, saying, "I struggled through the memory of flying snow all over the sky, but in which dictionary did you interpret the transformation?" What? "Sometimes the excitement of flowers is just a precursor to sadness in the dark." Plus a few 45-degree selfies with filters, or a light smile, or a low eyebrow, a cup of fresh and elegant green tea should be vivid, so sad that the ground men of Douban Anti-correction Group can collectively thump, so Guo Xiaosi had to kneel and call the master. I think I'm gonna throw up. My cousin gave me the information that Qi is currently working in a fitness club. I checked the address of the fitness club and found that it is not far from Xin Zhiyuan's company. I think they met at the gym. Xin Zhiyuan started fitness two years ago, and the two started taking pictures last summer and have been together for at least a year. Xin Zhiyuan told me that he was very confused at that time, and this was his first derailment. Ha ha. How can you suck my blood to feed his whole family and cheat on me? In Qi's other social account, I found that she scanned the code into a WeChat group discussing cosmetics. I got a new phone card, applied for a new micro signal, and entered that group with a new number. Qi's head is her own photo, which is really easy to find. I didn't add her right away. I have a way to get her to join me. A few days later, Xin Zhiyuan went home from the hospital. During his stay in hospital, he tried to contact me, but I didn't answer his phone, but today, I specially made a table for him to come back. Xin Zhiyuan was surprised to see the food on the table. He looked at me and the table, and his tone was full of surprise. "Yan Yan, you, you forgive me?" "Let's eat first," I motioned for him to change clothes and wash his hands for dinner. "The food in the hospital is not good. Look, you've lost weight. Knowing that Xin Zhiyuan has just had surgery, he will definitely not drink. I opened a bottle of wine instead of pouring myself a few glasses. I can't say anything that makes me sick. I don't eat, and I love to ignore what Xin Zhiyuan says to me. After three rounds of drinking, I finally cried with the strength of drinking. Xin Zhiyuan took the opportunity to hug me. While apologizing, he vowed that it was the first time he had sex with Qi and that he would break up with her and never do anything to hurt me again. I cried for a long time, and I cried very sadly. Finally, I told Xin Zhiyuan that I would never forgive him if it weren't for the baby in my belly. Since he promised to break up with Chippan, I will give him another chance. Xin Zhiyuan is very happy I looked at his smiling face and calculated the time to go to the hospital for abortion in my mind. Just pregnant for more than a month, now is the best time to have an abortion. I pretended to have an upset stomach and went to the hospital to see a doctor. When I came back, I told Xin Zhiyuan that the doctor judged that I had signs of threatened abortion and needed to stay in bed for a week. I said to Xin Zhiyuan, "You are still recovering and it is not convenient to take care of me. Let me stay at my parents' house for a week. You have a good rest at home and don't worry about me. Xin Zhiyuan was moved by my thoughtfulness and kindness, hugged me and said many words of thanks, and vowed to break up with San Xiao and give our baby a warm family. I nodded again and again, but there was no wave in my heart. The heart is dead and hopeless. I went to the hospital to have an abortion and went back to my parents' home to recuperate. I told my parents that Xin Zhiyuan was on a business trip, threatened abortion needed bed rest and went home for a week, and they didn't doubt it. I didn't tell my parents about Xin Zhiyuan. Not yet. Lying in bed to recuperate, I am not idle. I carefully decorated my children's circle, and photos of eating, drinking and having fun were sent out, and the environment was all kinds of tall; Send a few more beautiful photos that can see luxury goods, and a set of combination punches will come down, and a rich and idle white horse will be born. While decorating my circle of friends, I used a small chat brush in that cosmetics group to make people in the group get familiar with me. Whenever Qi speaks in it, I will pick up her words, support her, and create a feeling that we are in tune and get along well. When I came to my parents' house, I brought a lot of skin care products and cosmetics from home for my own use. I picked the most popular photos and sent them to the group, claiming that I was free. Now it's free to transfer. Ask if anyone wants it. I basically use big cards. As soon as the news came out, there was an earthquake in the group and a bunch of people lined up to ask for it. I chose the first one who raised her hand and asked her to add me to WeChat and tell me the address. I will express it to her today. A few days later, I sent another photo of my bag, which was also transferred for free. Bags are big names, too. It's really my leisure. I wanted to sell it on a second-hand website, but I was too lazy to get it. Now it's just for fishing. This package was also delivered smoothly. Chippan Pan raised her hand twice, but she didn't grab the first message, so she didn't have her share. In the evening, come and add my WeChat. I smiled coldly when I saw her friend application. What should have come, finally. The devil who sent my family to hell ten years ago finally began to walk into my trap.

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