Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Photochemistry of Epoxynaphthoquinones. 8. Endo-Stereoselective Photocycloaddition of 2,3-Epoxy-2,3-dihydro-2,3-dimethyl-1,4-naphthoquinone to Olefins Containing Amide Group
Kazuhiro MaruyamaAtsuhiro OsukaKatsuhiko Nakagawa
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1987 Volume 60 Issue 3 Pages 1021-1026

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Abstract

Irradiation of a benzene solution of 2,3-epoxy-2,3-dihydro-2,3-dimethyl-1,4-naphthoquinone with olefins containing amide group, i.e., N-substituted acrylamides and N-allylcarboxamides predominantly gave the endo-cycloadducts. Upon further irradiation, the cycloadducts underwent photorearrangement to give spirophthalides and alkylidenephthalides.

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