One-Pot Sulfoxide Synthesis Exploiting a Sulfinyl-Dication Equivalent Generated from a DABSO/Trimethylsilyl Chloride Sequence
作者:Danny C. Lenstra、Vincent Vedovato、Emmanuel Ferrer Flegeau、Jonathan Maydom、Michael C. Willis
DOI:10.1021/acs.orglett.6b00712
日期:2016.5.6
sulfinate intermediate. In situ conversion of the sulfinate to a sulfinate silyl ester, using TMS-Cl (trimethylsilyl chloride), generates a second electrophile, allowing addition of a second organometallic reagent. Organolithium or Grignard reagents can be employed, delivering sulfoxides in good to excellent yields.
描述了一种使用有机金属亲核试剂合成不对称亚砜的一锅法。从替代DABSO(DABCO- bis(二氧化硫))输送的二氧化硫用作初始亲电试剂,并与第一种有机金属试剂结合生成亚磺酸盐中间体。使用TMS-Cl(三甲基甲硅烷基氯)将亚磺酸盐原位转化为亚磺酸盐甲硅烷基酯可生成第二亲电试剂,从而可添加第二有机金属试剂。可以使用有机锂或格氏试剂,以高至极好的收率递送亚砜。