Generation, some synthetic uses, and 1,2-vinyl rearrangements of secondary and tertiary homoallyllithiums, including ring contractions and a ring expansion. Remarkable acceleration of the rearrangement by an oxyanionic group
作者:Boguslaw Mudryk、Theodore Cohen
DOI:10.1021/ja00063a001
日期:1993.5
addition of thiophenol to a conjugated enal or enone followed by a Wittig or Peterson olefination, (2) the reaction of a silyl enol ether with a diphenyl dithioacetal catalyzed by stannic chloride, followed by a Peterson olefination, or (3) the treatment of the lithio derivatives of phenyl thioethers or thioacetals or the corresponding cuprates with allyl halides
高烯丙基锂的一种非常通用的制备方法包括用 4,4'-二叔丁基联苯锂对高烯丙基苯基硫化物进行还原锂化。硫化物可以通过多种方法制备,包括 (1) 三乙胺催化将苯硫酚加成到共轭烯醛或烯酮上,然后进行 Wittig 或 Peterson 烯化,(2) 甲硅烷基烯醇醚与二苯基二硫缩醛催化的反应通过氯化锡,然后进行彼得森烯化,或 (3) 用烯丙基卤化物处理苯基硫醚或硫代缩醛的锂硫衍生物或相应的铜酸盐