249629-60-5Relevant articles and documents
Synthesis and reactivity of some 3,4-dibromo-2H[1]benzopyrans: The generation and reactions of 3,4-didehydro-2H-[1]benzopyran
Gabbutt, Christopher D.,Hepworth, John D.,Heron, B. Mark,Rahman, Md. Moshfiqur,Coles, Simon J.,Hursthouse, Michael B.
, p. 10467 - 10480 (2007/10/03)
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.
