Crystal structure of ethyl 2 acetyl 3,7 di­methyl 5 (thio­phen 2 yl) 5H thia­zolo[3,2 a]pyrimidine 6 carboxyl­ate

In the crystal, molecules are linked C3—H3 O3 i hydrogen bonds, forming chains propagating along [001]; see Table 1 and Fig6. Within the chains there are weak offset –

The chains are linked by slipped parallel – inter- actions, involving inversion-related benzene rings, forming slabs lying parallel to the bc plane {inter-centroid distance = 3.770

In the crystal, weak C14–H···O3 intermolecular interactions link the molecules forming infinite one-dimensional linear chains along the c axis while weak

In addition, weak Cg–Cg π – π stacking interactions are observed involving the thiophene rings and pyrrole rings of the two molecules with the shortest intercentroid distance

In the crystal, N—H O hydrogen bonds link the molecules into a chain running along the b -axis direction.. Weak C—H O hydrogen bonds and weak C—H interactions are

The two-tier layers of the title compound parallel to (001). Dashed lines indicate the intermolecular C—H···O hydrogen bonds.. in the dihedral angle between two l.s. planes)

The crystal packing is stabilized by N—H O hydrogen bonds, which link molecules into chains along the a axis. The packing is further stabilized by weak C—H O interactions.

The crystal packing of the title compound, showing hydrogen-bonded network (dashed lines). H atoms not involved in hydrogen bond interactions and atoms of the minor disorder