A direct route for the synthesis of (E)-3-alkyl-4-oxo-2-butenoic acid esters
S Laugraud, A Guingant, J d'Angelo
Index: Laugraud, Sylvain; Guingant, Andre; d'Angelo, Jean Journal of Organic Chemistry, 1987 , vol. 52, # 21 p. 4788 - 4790
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Citation Number: 10
Abstract
Esters of (E)-3-alkyl-4-0~ 0-2-butenoic acid (1) are useful intermediates in organic synthesis. Thus, compound la is an important synthon in many retinoic acids syntheses; l moreover this ester has recently been used as a dienophile. 2 We required ester lb as a diene precursor in order to synthesize akla~ inone.~ Although several syntheses of compound la have already been published4 none are general methods that can easily be used to prepare ester lb. In ...
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