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Simun Mishra posted an Question

July 23, 2020 • 22:30 pm

30 points

IIT JAM
Chemistry (CY)

What is betain ?

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Dinesh khalmaniya 1 Best Answer

check it
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So one can imagine the first step of the Wittig reaction as being the attack of the nucleophilic ylide carbon on the electrophilic carbonyl carbon, providing a species with a negative charge on oxygen and a positive charge on phosphorus. This is the classic “addition” (sometimes called “1,2-addition”) mechanism to carbonyls.
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what is Zwatter ion
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In chemistry, a zwitterion is a molecule that contains an equal number of positively- and negatively-charged functional groups.
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Betain is like a Zwitter ion. but in wittig reaction it is known as Betain
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got it?
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ok sir 😊know I perfectly understand 🙏🙏
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Suman Kumar

See the mechanism of wittig reaction. Structure iv is betain
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A betaine in chemistry is any neutral chemical compound with a positively charged cationic functional group such as a quaternary ammonium or phosphonium cation (generally: onium ions) that bears no hydrogen atom and with a negatively charged functional group such as a carboxylate group that may not be adjacent to the cationic site. A betaine is a specific type of zwitterion.
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Read this Simun 😊
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I m reading sir
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Did you get this
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yes sir 😊😁
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