The Preparation of 5-Aryl-5-methyl-4,5-dihydroisoxazoles from Dilithiated C(α),O-Oximes and Select Acetyl Ketones
摘要:
Several 5-aryl-5-methyl-4,5-dihydroisoxazoles were prepared by a three-step, one-pot process in 24-83% yield. C(alpha),O-oximes were dilithiated with lithium diisopropylamide and condensed with electron enriched acetophenones, such as 4'-methoxyacetophenone, followed by immediate acid cyclization.
The Preparation of 5-Aryl-5-methyl-4,5-dihydroisoxazoles from Dilithiated C(α),O-Oximes and Select Acetyl Ketones
摘要:
Several 5-aryl-5-methyl-4,5-dihydroisoxazoles were prepared by a three-step, one-pot process in 24-83% yield. C(alpha),O-oximes were dilithiated with lithium diisopropylamide and condensed with electron enriched acetophenones, such as 4'-methoxyacetophenone, followed by immediate acid cyclization.