Ga(OTf)<sub>3</sub>-Catalyzed Direct Substitution of Alcohols with Sulfur Nucleophiles
作者:Xinping Han、Jimmy Wu
DOI:10.1021/ol102565b
日期:2010.12.17
It is reported that Ga(OTf)(3) catalyzes the direct displacement of alcohols with sulfur nucleophiles. The products are versatile intermediates that can be utilized in carbon carbon, carbon sulfur bond formation or used in modified Julia olefination reactions. The only byproduct generated is water.
Neutral Sulfur Nucleophiles: Synthesis of Thioethers and Thioesters by Substitution Reactions of N-Heterocyclic Carbene Boryl Sulfides and Thioamides
作者:Xiangcheng Pan、Dennis P. Curran
DOI:10.1021/ol5010164
日期:2014.5.16
Newly discovered boryl sulfides and N-borylthioamides are shown to serve as neutral sources of sulfur nucleophiles in substitutionsreactions. For example, heating of diMe-Imd-BH(SPh)2 with benzyl bromides, primary bromides, or acid chlorides provides the corresponding thioethers or thioesters in high yields. Likewise, N-phenyltetrazole thioethers/esters are made from a readily available N-borylthionotetrazole