3-Ethyl 2-methyl 8-bromo-2-phenyl-1,2,3,3a,4,9b-hexahydrochromeno[4,3-b]pyrrole-2,3-dicarboxylate

oleh: Long He

Format: Article
Diterbitkan: International Union of Crystallography 2010-12-01

Deskripsi

The title compound, C22H22BrNO5, was synthesized by the intramolecular cycloaddition reaction of (E)-ethyl 4-(4-bromo-2-formylphenoxy)but-2-enoate and methyl 2-amino-2-phenylacetate. The pyrrolidine and 3,4-dihydro-2H-pyran rings exhibit envelope conformations. The two benzene rings are twisted to each other at a dihedral angle of 59.36 (18)°. The ethoxy group of the ester unit is disordered over two sites with an occupancy ratio of 0.503 (11):0.497 (11). Weak intermolecular C—H...O hydrogen bonding is present in the crystal structure.