Lewis acid-assisted Ir(<scp>iii</scp>) reductive elimination enables construction of seven-membered-ring sulfoxides
作者:Wu Yang、Yingzi Li、Jiefeng Zhu、Wentan Liu、Jie Ke、Chuan He
DOI:10.1039/d0sc04180g
日期:——
bond formation appears to have fallen off significantly. The main problem lies in the reductive elimination step, as iridium has a tendency to form stable and catalytically inactive Ir(III) species. Herein, with a rationally designed Lewisacid assisted oxidatively induced strategy, the sluggish Ir(III) reductive elimination is successfully facilitated, enabling the facile C–C bond formation. The X-ray
An efficient method for the deoxygenation of sulfoxides into their corresponding sulfides at room temperature using NaHSO3 in the presence of catalytic I-2 has been reported. (C) 2015 Elsevier Ltd. All rights reserved.
Diastereoselective Alkylations of a Protected Cysteinesulfenate
作者:Adrian L. Schwan、Marcus J. Verdu、Suneel P. Singh、Jennifer S. O’Donnell、Amir Nasser Ahmadi
DOI:10.1021/jo901021r
日期:2009.9.4
To further understand stereoselection in the alkylation of sulfenate anions, a protected cysteinesulfenate was generated in THF solution at low temperature. Introduction of a reactive alkylating agent brings about a cysteinyl sulfoxide in 51-75% yield, with diastereomeric ratios at the sulfinyl group ranging from 83:17 to 95:5. An internally complexed lithium counterion is proposed to account for the stereoselectivity.