Synthesis, crystal structure and Hirshfeld surface analysis of tert-butyl N-acetyl­carbamate

This article reports a practical synthesis of tert-butyl acetyl­carbamate, C(7)H(13)NO(3), from N-Boc-thio­acetamide and the study of its crystal structure. The reaction proceeds in the presence of natural phosphate as a catalyst, with excellent yield, simple workup and benign environment. The crystal structure was refined using a transferred multipolar atom model. In the crystal, symmetrical pairs of strong N—H⋯O hydrogen bonds connect the mol­ecules into dimers with an R (2) (2)(8) ring motif. The inter­actions between neighbouring dimers are mostly van der Waals, between hydro­phobic methyl groups. Hirshfeld surface analysis shows the major contributions to the crystal packing are from H⋯H (42.6%) and O⋯H (26.7%) contacts.