Preparation of Sulfilimines by Sulfur-Alkylation of <i>N</i>-Acyl Sulfenamides with Alkyl Halides
作者:Andrew T. Champlin、Jonathan A. Ellman
DOI:10.1021/acs.joc.3c00750
日期:2023.6.2
Sulfur alkylation of N-acyl sulfenamides with alkyl halides provides sulfilimines in 47% to 98% yields. A broad scope was established with a variety of aryl and alkyl sulfenamides, including for different N-acyl groups. Alkyl halides with different steric and electronic properties were effective inputs, including methyl, primary, secondary, benzyl, and propargyl halides. A proof-of-concept asymmetric
2-Sulfonimidoylylidene tetrahydrofurans and 2-sulfonimidoylylidene-5-vinyl tetrahydrofurans were readily synthesized via a consecutive acylation/SN2 sequence with total regio- and chemoselectivity from Johnson's sulfoximine derivatives. The same consecutive reaction could also be applied to the expeditious synthesis of 6-sulfonimidoylmethyl-3,4-dihydro-2H-pyrans. (C) 2009 Elsevier Ltd. All rights reserved.