Methyl (<i>E</i>)-4-Chloro-3-methoxy-2-butenoate: An Extremely Versatile Four Carbon Building Block
作者:Laurent Duc、John F. Mcgarrity、Thomas Meul、Aleksander Warm
DOI:10.1055/s-1992-26120
日期:——
Methyl (E)-4-chloro-3-methoxy-2-butenoate (3a) is inexpensively prepared from methyl 4-chloroacetoacetate using thionyl chloride and methanol on an industrial scale. Many nucleophilic substitution reactions of chloride, which are impossible with the unprotected parent compound proceed readily with 3a.
(E)-4-氯-3-甲氧基-2-丁烯酸甲酯(3a)是利用亚硫酰氯和甲醇从 4-氯乙酰乙酸甲酯中制备出来的,成本低廉,具有工业规模。许多氯的亲核取代反应在未受保护的母体化合物中是不可能发生的,而在 3a 中却很容易发生。