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Synlett 2000; 2000(4): 493-494
DOI: 10.1055/s-2000-6583
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Catalytic Synthesis of Allenes via Isomerization of Alkynes under Phase-Transfer Catalyzed Conditions

Makoto Oku* , Shigeru Arai, Kimiko Katayama, Takayuki Shioiri
  • *Faculty of Pharmaceutical Sciences, Nagoya City University Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan; Fax +81-52-8 34-41 72; E-mail: shioiri@phar.nagoya-cu.ac.jp
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Publication Date:
31 December 2000 (online)

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Catalytic isomerization of alkynes to allenes under phase-transfer catalyzed conditions is described. Commercially available quaternary ammonium salt such as tetrahexylammonium bromide acts as a very effective promoter to accelerate the reaction under mild conditions.

allenes - asymmetric reactions - catalysts - isomerization - phase-transfer