1sry itz Oxygen connected to H and itz keto enol tautomerism i missed out the H connected to O so now you tel the reason??
frndz say the reason why the taoutomer for the following is the 2nd one??
but generally it shld be taken from alpha carbon but this differrent but y??
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8 Answers
1What is the 3rd figure about?
The valency of oxygen is not satisfied in 2nd and 3rd figure
1
23bcz H attached to N was more acidic , than that to C ,and it forms more stable 5 membered rings,
1how can u say itz more acidic and dat forms a more stabled ring?????
1how can u say itz more acidic and dat forms a more stabled ring?????
23i can say it bcz i studied it somewhere , and H attached to O > N>C (wen all sp3) , acidity wise
1BUt in dat tautomersimm the hydrogen is alwayz taken from alpha hydrogen na???but in dis case y N hydrogen is attached??as u said itz more acidic k but is it an experimental fact or thrz any other reason behind it????
23how will oxygen come to kno wich H is of Carbon and wich H is of Nitrogen ? it will just abstract the one wich is more acidic ...
btw here i think mechanism is such that first N attacks like a nucleophile on the carbonyl carbon , and then oxygen abstracts H .
dont think of tautomerism like in #8. by definition tautomers are functional isomers in equilibrium, and they may interchange thru many ways , not necessarily abstraction of H frm alpha carbon .... wat u r thinking is just keto enol tautomersim , but thats not the only type possible ...