6-Fumaryl 1.3.8-nonatrienes substituted at the C5 position by a vinyl group were found to undergo competing tandem sigmatropic rearrangement/Diels-Alder cyclisation when heated under standard Diels-Alder cyclisation conditions. This rearrangement became the exclusive pathway when the reactions were performed in the presence of a Lewis acid. (C) 2002 Elsevier Science Ltd. All rights reserved.
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Fujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, JapanFujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, Japan
Yoshimura, S
Sato, B
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Fujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, JapanFujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, Japan
Sato, B
Kinoshita, T
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Fujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, JapanFujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, Japan
Kinoshita, T
Takase, S
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Fujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, JapanFujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, Japan
Takase, S
Terano, H
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机构:
Fujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, JapanFujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, Japan
Yoshimura, S
Sato, B
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Fujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, JapanFujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, Japan
Sato, B
Kinoshita, T
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Fujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, JapanFujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, Japan
Kinoshita, T
Takase, S
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Fujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, JapanFujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, Japan
Takase, S
Terano, H
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Fujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, JapanFujisawa Pharmaceut Co Ltd, Exploratory Res Labs, Tsukuba, Ibaraki 3002698, Japan