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9 Answers
24Good attempt..but maybe u overlooked significance of word "excess"
try it once more..i am sure u can do that..
very close to the answer[1]
19"EXCESS" indicates the generation of more carbanions !(is it so?)
39Not really. LDA is a very strong base, often used in cross aldol condensations to minimize products. The formation of the carbanion is a process in equilibrium, and LDA moves the equilibrium vastly forward by finishing the reactant completely(generating the one carbanion).
19what is this explanation??? does LDA minimize products?? my knowledge tells me that it only generates carbanion at least substituted carbon atom !!!
39Let me complete your knowledge. If a strong base abstracts a proton, it is less likely it will give the proton back. Stronger the base, better its proton keeping ability(recall that the strength of acids is decided by how easily they can donate protons, vice versa for bases). And if the proton doesn't go back, there is no equilibrium, but instead a straight forward reaction.
Without the equilibrium, the chances of other carbanions forming are next to null.
24Sorry I was wrong....
Pritish is correct,,,sorry bro for wasting ur time and energy...