Stereoselective Synthesis of (E)-Alkenyl Sulfones from Alkenes or Alkynes via Copper-Catalyzed Oxidation of Sodium Sulfinates
作者:Nobukazu Taniguchi
DOI:10.1055/s-0030-1260544
日期:2011.6
Alkenyl sulfones can be stereoselectively synthesized from alkenes or alkynes using sodium sulfinates. The reaction can be performed by a copper-catalyzedoxidation of sodium sulfinates in air. The reaction of alkenes gives (E)-alkenyl sulfones via anti addition of sulfonyl cation and elimination process. Furthermore, the employment of alkynes produces (E)-β-haloalkenyl sulfones in the presence of
Iron Halide-Mediated Regio- and Stereoselective Halosulfonylation of Terminal Alkynes with Sulfonylhydrazides: Synthesis of (<i>E</i>)-β-Chloro and Bromo Vinylsulfones
Halosulfonylation of terminal alkynes was achieved with sulfonylhydrazides as the sulfonyl precursor and inexpensive iron halide as halide source in the presence TBHP, allowing the regio- and stereoselective generation of (E)-beta-chloro and bromo vinylsulfones.
RAMANA, REDDY, M. V.;RAO, NAIDU, M. S., ACTA CHIM. HUNG., 1984, 117, N 2, 153-161