Catalytic asymmetric Horner-Wadsworth-Emmons reaction under phase-transfer-catalyzed conditions
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Arai, S
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Nagoya City Univ, Fac Pharmaceut Sci, Mizuho Ku, Nagoya, Aichi 4678603, JapanNagoya City Univ, Fac Pharmaceut Sci, Mizuho Ku, Nagoya, Aichi 4678603, Japan
Arai, S
[1
]
Hamaguchi, S
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Nagoya City Univ, Fac Pharmaceut Sci, Mizuho Ku, Nagoya, Aichi 4678603, JapanNagoya City Univ, Fac Pharmaceut Sci, Mizuho Ku, Nagoya, Aichi 4678603, Japan
Hamaguchi, S
[1
]
Shioiri, T
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Nagoya City Univ, Fac Pharmaceut Sci, Mizuho Ku, Nagoya, Aichi 4678603, JapanNagoya City Univ, Fac Pharmaceut Sci, Mizuho Ku, Nagoya, Aichi 4678603, Japan
Shioiri, T
[1
]
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[1] Nagoya City Univ, Fac Pharmaceut Sci, Mizuho Ku, Nagoya, Aichi 4678603, Japan
The catalytic asymmetric Homer-Wadsworth-Emmons reaction promoted by quaternary ammonium salts derived from cinchonine as a phase-transfer catalyst is described. Treatment of the prochiral ketone 1 with phosphonates under mild reaction conditions afforded the corresponding desired products in moderate enantiomeric excess. (C) 1998 Elsevier Science Ltd. All rights reserved.