Long He
Nov 6, 2010
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Journal
Acta Crystallographica Section E: Structure Reports Online
Abstract
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.