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 (trimethylsilylchloride), 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.
Sulfinic acids were found to be readily reduced to the corresponding disulfide quantitatively at room temperature upon treatment with a mixture of thiols and chlorotrimethylsilane.
This invention resides in a polymerization process which is catalyzed by an oxyanion which can form a conjugate acid having a pKa (DMSO) of about 5 to about 24.