Abstract
AbstractA solvent‐free organocatalyzed intermolecular cyclization reaction starting from β‐substituted γ‐hydroxy‐α,β‐unsaturated esters and aryl isothiocyanates proceeds via an aza‐Michael addition to provide previously unknown quaternary oxazolidine‐2‐thione β3‐amino ester analogs. A panel of diversely‐substituted esters was investigated, including β,γ‐disubstituted examples which provided the target molecules with very high cis diastereoselectivity.
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