Unprecedented transformation from cyclized zwitterionic oxazolidine derivatives to corresponding non-zwitterionic aromatic amides via Vilsmeier reagent in a one-pot reaction: optical property and crystallography

Abstract

Tetracyanoquinodimethane (TCNQ) is familiar to react with primary/secondary/certain aromatic amines to generate mono/di-substituted and cyclized derivatives manifesting optical and non-linear optical material attributes. Interestingly, further functionalization of mono/di-substituted or cyclized...