Intramolecular C-alkylation in βγ-unsaturated diazo ketones: a new synthetic route to angularly fused cyclobutanones and γ-lactones
Abstract
A new synthesis of angyularly fused cyclobutanones by the acid-catalysed intramolecular C-alkylation of βγ-unsaturated α-diazomethyl ketones is described along with their transformation into γ-lactones.