The chemistry of acylals. Part I. The reactivity of acylals towards Grignard and organolithium reagents
作者:Leiv K. Sydnes、Marcel Sandberg
DOI:10.1016/s0040-4020(97)00789-8
日期:1997.9
been prepared and reacted with Grignard and alkyllithium reagents. Acylals from formaldehyde furnished complex reaction mixtures when reacted with both reagents. Acylals of other aldehydes gave reaction mixtures that consisted mainly of an ester, generated by replacing one of the carboxy groups with the organic part of the organometallic reagent, and regenerated aldehyde. The esters were formed in the
制备了醛酰基,并使其与格氏试剂和烷基锂试剂反应。当与两种试剂反应时,甲醛制的缩醛可提供复杂的反应混合物。其他醛的缩醛得到的反应混合物主要由酯组成,该混合物通过用有机金属试剂的有机部分取代羧基之一而生成,并生成醛。形成的酯产率最高。当酰基在Barbier条件下与格氏试剂反应时,收率超过90%。