Dimethyl 3,3′-diphenyl-2,2′-[(S)-thiophene-2,5-diylbis(carbonylazanediyl)]dipropanoate

Abstract

The asymmetric unit of the title compound, C26H26N2O6S, contains two independent mol­ecules; each has twofold symmetry with the S atom and the mid-point of the C—C bond of the thio­phene ring located on a twofold rotation axis. In the two mol­ecules, the terminal benzene rings are oriented at dihedral angles of 65.8 (3) and 63.5 (3)° with respect to the central thio­phene rings. The meth­oxy­carbonyl group of one mol­ecule is disordered over two positions with site-occupancy factors of 0.277 (12) and 0.723 (12). Inter­molecular N—H⋯O hydrogen bonding is present in the crystal structure.

Dimethyl 3,3′-diphenyl-2,2′-[(S)-thiophene-2,5-diylbis(carbonylazanediyl)]dipropanoate tetrahydrofuran monosolvate

“…The procedure used for the synthesis of the title compound is thus carried-out without inversion for chiral centers. The structure of the unsolvated molecule with identical absolute configuration has been determined (Xia et al, 2010).…”