Synthesis 2012; 44(23): 3623-3632
DOI: 10.1055/s-0032-1317507
paper
© Georg Thieme Verlag Stuttgart · New York

Coupling Reaction of Magnesium Alkylidene Carbenoids with α-Sulfonyl­allyllithiums: An Efficient Route to Multi-Substituted Vinylallenes

Tsutomu Kimura
a   Department of Chemistry, Faculty of Science, Tokyo University of Science, 12 Ichigaya-funagawara-machi, Shinjuku-ku, Tokyo 162-0826, Japan
,
Gen Kobayashi
b   Graduate School of Chemical Sciences and Technology, Tokyo University of Science, 12 Ichigaya-funagawara-machi, Shinjuku-ku, Tokyo 162-0826, Japan   Fax: +81(3)52614631   Email: tsatoh@rs.kagu.tus.ac.jp
,
Masashi Ishigaki
b   Graduate School of Chemical Sciences and Technology, Tokyo University of Science, 12 Ichigaya-funagawara-machi, Shinjuku-ku, Tokyo 162-0826, Japan   Fax: +81(3)52614631   Email: tsatoh@rs.kagu.tus.ac.jp
,
Mio Inumaru
b   Graduate School of Chemical Sciences and Technology, Tokyo University of Science, 12 Ichigaya-funagawara-machi, Shinjuku-ku, Tokyo 162-0826, Japan   Fax: +81(3)52614631   Email: tsatoh@rs.kagu.tus.ac.jp
,
Jo Sakurada
b   Graduate School of Chemical Sciences and Technology, Tokyo University of Science, 12 Ichigaya-funagawara-machi, Shinjuku-ku, Tokyo 162-0826, Japan   Fax: +81(3)52614631   Email: tsatoh@rs.kagu.tus.ac.jp
,
Tsuyoshi Satoh*
a   Department of Chemistry, Faculty of Science, Tokyo University of Science, 12 Ichigaya-funagawara-machi, Shinjuku-ku, Tokyo 162-0826, Japan
b   Graduate School of Chemical Sciences and Technology, Tokyo University of Science, 12 Ichigaya-funagawara-machi, Shinjuku-ku, Tokyo 162-0826, Japan   Fax: +81(3)52614631   Email: tsatoh@rs.kagu.tus.ac.jp
› Author Affiliations
Further Information

Publication History

Received: 30 August 2012

Accepted after revision: 06 October 2012

Publication Date:
24 October 2012 (online)


Abstract

A variety of vinylallenes were successfully synthesized from 1-chlorovinyl p-tolyl sulfoxides and allyl or vinyl sulfones. Allyl and vinyl sulfones served as α-sulfonylallyllithium sources were prepared from carbonyl compounds in three or four steps in good overall yields. The coupling reaction of α-sulfonylallyllithiums with magnesium alkylidene carbenoids, which were generated from 1-chlorovinyl p-tolyl sulfoxides and isopropylmagnesium chloride, afforded multi-substituted vinylallenes in up to 88% yield.

Supporting Information