![]() treatment of the allenic ester 64 with LDA to form the ester enolate followed by. )/RD/Type/Annot/AP>endobj1323 0 objendobj1324 0 obj/ProcSet>/Type/XObject/BBox/FormType 1>stream It was found that tetraallylmanganate added regioselectively to cyclic. Let’s put these together to get a complete mechanism of ester reaction with amines: Now, even though the alkoxy is a better leaving group than a conjugate base of an amine, it still is a very poor leaving. The product of a Claisen conde\nsation or DieckmannĬyclization is an acetoacetic ester \(-keto ester\) ![]()
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