Scope and Limitations in the Use of α-Silyl and α-Stannyl Sulfones as Latent α-Sulfonyl Anions
作者:M. Lamothe、M. B. Anderson、P. L. Fuchs
DOI:10.1080/00397919108021069
日期:1991.8
from α-silyl sulfones and α-stannyl sulfones are investigated. These methods include: (1) treatment of α-silyl sulfones with electrophiles (aldehydes and acid halides) in the presence of fluoride ion; (2) reaction of α-silyl sulfones with n-butyllithium which produces an α-silyl anion via a migration of the -SiMe3 group from the α-position to the ortho-position of the phenyl sulfones; and (3) direct
摘要 研究了从α-甲硅烷基砜和α-甲甲磺酰基砜中再生α-磺酰基阴离子的三种方法。这些方法包括: (1) 在氟离子存在下,用亲电试剂(醛和酰卤)处理 α-甲硅烷基砜;(2) α-甲硅烷基砜与正丁基锂反应,通过-SiMe3基团从苯砜的α-位迁移到邻位,生成α-甲硅烷基阴离子;(3) α-甲锡磺基砜经正丁基锂处理直接金属转移。添加氯化铈 [III] 显示出显着减少与将 α-磺酰基阴离子添加到带有可烯醇化质子的羰基化合物相关的烯醇化问题。