Journal of the Chemical Society, Perkin Transactions 1

Benzopyrans. Part 41. Reactions of 2-(2-dimethylaminovinyl)-1-benzopyran-4-ones with various dienophiles

CK Ghosh

文献索引：Ghosh, Chandra Kanta; Bhattacharyya, Samita; Ghosh, Chandreyi; Patra, Amarendra Journal of the Chemical Society - Perkin Transactions 1, 1999 , # 20 p. 3005 - 3013

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被引用次数: 3

摘要

Dienamine 1 with N-phenylmaleimide and chromenone 14 as well as 15 produces, through initial [4+ 2] cycloaddition, xanthenones 10 and 18, respectively. Initial Michael addition of 1 to chromenones 14 and 16, and dimethyl acetylenedicarboxylate (DMAD), triggers the formation of xanthenone 19, 4-azaxanthenone 26 and substituted fumarate 49, respectively. Initial [2+ 2] cycloadducts of dienamines 1–3 with electrophilic acetylenes always undergo ...