Tetrahedron p. 10467 - 10480 (1999)
Update date:2022-08-03
Topics:
Gabbutt, Christopher D.
Hepworth, John D.
Heron, B. Mark
Rahman, Md. Moshfiqur
Coles, Simon J.
Hursthouse, Michael B.
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.
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