Synthesis and reactivity of some 3,4-dibromo-2H[1]benzopyrans: The generation and reactions of 3,4-didehydro-2H-[1]benzopyran

Christopher D. Gabbutt, John D. Hepworth, B. Mark Heron, Md Moshfiqur Rahman, Simon J. Coles, Michael B. Hursthouse

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Reaction of 3,4-dibromo-2,2,6,8-tetramethyl-2H-[1]benzopyran with either organolithium reagents or magnesium generates the novel strained alkyne, 3,4- didehydro-2H-[1]benzopyran. Cycloaddition with furans gives access to the dibenzo[b,d]pyran system.

Original languageEnglish
Pages (from-to)10467-10480
Number of pages14
JournalTetrahedron
Volume55
Issue number34
DOIs
Publication statusPublished - 20 Aug 1999
Externally publishedYes

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