SYNTHESIS OF 2,2-DIMETHYL-2H-CHROMENES
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Date
1984
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Abstract
The antijuvenile hormones precocenes I and II, and related 2,2-dimethyl-2H chromenes were synthesized by oxidative cyclization of o-isoprenylphenols with m-chloroperbenzoic acid, followed by dehydration of the corresponding 3-chromanols with methyltriphenoxyphosphonium iodide.