Stereoselective S-oxidation of 5-substituted 4-acetyl-Δ2-1,3,4-thia-diazolines: X-ray crystal structure of 4-acetyl-2-acetylamino-5-methy-5-phenyl-Δ2-1,3,4-thiadiazoline 1-oxide
Abstract
N.m.r. spectroscopy and X-ray crystallography show that oxidation of 5-substituted 4-acetyl-2-acetylamino-Δ2-1,3,4-thiadiazolines with m-chloroperbenzoic acid gives the corresponding Δ2-1,3,4-thiadiazoline 1-oxides; the novel reactions of the product (2a) are also described.