Expedient Synthesis, on Large Scale, of Aliphatic Chaetomellic Anhydrides from <i>N</i>-Allyl-2,2-dichlorocarboxyamides
作者:Franco Ghelfi、Mariella Pattarozzi、Fabrizio Roncaglia、Valerio Giangiordano、Andrew F. Parsons
DOI:10.1080/00397910903029974
日期:2010.3.12
Chaetomellic anhydride A and an analog (with two additional carbons) were obtained, on a preparative scale, starting from amides derived from the acylation of 2-(2-propenylamino)pyridine with 2,2-dichloropalmitic or 2,2-dichlorostearic acid. An alternative approach, in which the methyl substituent of the target anhydride is introduced by the carboxylic acid reactant and the long aliphatic chain is
从衍生自 2-(2-丙烯基氨基)吡啶与 2,2-二氯棕榈酸或 2,2-二氯硬脂酸酰化的酰胺开始,以制备规模获得毛甲酸酐 A 和类似物(具有两个额外的碳)。另一种方法被证明是不可行的,其中目标酸酐的甲基取代基由羧酸反应物引入,并通过烯丙基氨基部分添加长脂肪链。