Synthesis of 1H-2-Benzopyran-5,8-dione Derivatives from 2-(1-Hydroxy­alkyl)-1,4-benzoquinones and Enamines

Kazuhiro Kobayashi,Kosaku Nomura,Toshikazu Ogata,Miyuki Tanmatsu,Osamu Morikawa,Hisatoshi Konishi

Synthesis of 1H-2-Benzopyran-5,8-dione Derivatives from 2-(1-Hydroxyalkyl)-1,4-benzoquinones and Enamines

2003

Kazuhiro Kobayashi
Kosaku Nomura
Toshikazu Ogata
Miyuki Tanmatsu
Osamu Morikawa
Hisatoshi Konishi

An efficient synthesis of the title benzopyranodione derivatives based on a Michael addition/cyclization sequence between 2-(1-hydroxyalkyl)-1,4-benzoquinones and enamines (or an imine) is described.

Keywords:

Photochemistry
Alkyl
Imine
Organic chemistry
Benzopyran
Chemistry
Michael reaction

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Synthesis of 1H-2-Benzopyran-5,8-dione Derivatives from 2-(1-Hydroxy­alkyl)-1,4-benzoquinones and Enamines

Synthesis of 1H-2-Benzopyran-5,8-dione Derivatives from 2-(1-Hydroxyalkyl)-1,4-benzoquinones and Enamines