A mild and odorless copper-catalyzed thiolation of terminal alkynes with thiosulfonates is described. The broad substrate scope provides convenient access to a wide variety of sulfur-containing heterocycles. In particular, divergent benzoheteroles are efficiently prepared in a simple manner by thiolation of ethynylbenzenes bearing ortho-nucleophilic functional groups followed by iodocyclization.

JOURNAL:
Organic Letters

TITLE:
Synthesis of Alkynyl Sulfides by Copper-Catalyzed Thiolation of Terminal Alkynes Using Thiosulfonates

DOI:
http://dx.doi.org/10.1021/acs.orglett.9b00875

Takamitsu HOSOYA, Professor
Department of Chemical Bioscience,
Institute of Biomaterials and Bioengineering,
Tokyo Medical and Dental University(TMDU)
E-mail:thosoya.cb(at)tmd.ac.jp


＊Please change (at) in e-mail addresses to @ on sending your e-mail to contact personnels.