Synthesis 2017; 49(22): 5007-5016
DOI: 10.1055/s-0036-1588501
paper
© Georg Thieme Verlag Stuttgart · New York

Palladium-Catalyzed Regio- and Stereoselective Hydrosulfonation of Propiolate Esters

Selvam Raju
a   Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan, R.O.C.
,
Pratheepkumar Annamalai
a   Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan, R.O.C.
,
Fu-Wei Chan
a   Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan, R.O.C.
,
Po-Yen Tseng
a   Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan, R.O.C.
,
Po-Yen Chen
a   Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan, R.O.C.
,
Ting-Shen Kuo
b   Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan, R.O.C.   Email: jscchuang@faculty.nctu.edu.tw
,
a   Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan, R.O.C.
› Author Affiliations
Ministry of Science and Technology of Taiwan (MOST104-2113-M-009-014-MY3 and MOST105-2628-M-009-002-MY3)
Further Information

Publication History

Received: 15 April 2017

Accepted after revision: 09 June 2017

Publication Date:
31 July 2017 (online)


Abstract

An efficient palladium-catalyzed addition reaction of alkyl- and arylsulfonic acids to propiolate esters to yield alkenyl sulfonates is demonstrated. The formation of alkenyl sulfonates is highly regio- and stereoselective with favorable yields of up to 95%, and two of the alkenyl sulfonates are utilized for a Sonogashira cross-coupling reaction to produce (Z)-1,3-enynoates.

Supporting Information