tert-Butyl 2-sulfanylidene-2,3-dihydro-1H-imidazole-1-carboxyl­ate

In the title mol­ecule, C₈H₁₂N₂O₂S, the imidazole ring forms a dihedral angle of 5.9 (2)° with the mean plane of the carboxyl­ate group. In the crystal, mol­ecules are linked by pairs of N—H...S hydrogen bonds, forming inversion dimers.

Methyl 2-[(tert-but­oxy­carbon­yl)amino]-3-(3-methyl-2-sulfanyl­idene-2,3-dihydro-1H-imidazol-1-yl)propano­ate

In the title compound, C₁₃H₂₁N₃O₄S, the mean plane of the –N(H)—C(=O)—O– group of the carbamate unit forms a dihedral angle of 64.7 (2)° with the mean plane of the –C—C(=O)—O– group of the ester unit. In the crystal, mol­ecules are linked by N—H...O=C hydrogen bonds, forming chains along the c-axis direction.