Ethyl 2‐amino‐4‐(2,4‐dichlorophenyl)‐4H‐benzo[f]chromene‐3‐carboxylate
2003
The title compound, C22H17Cl2NO3, was synthesized by the reaction of 2-naphthol with 2,4-dichlorobenzaldehyde and ethyl cyanoacetate in ethanol in the presence of KF/Al2O3 as catalyst. X-ray analysis reveals that the pyran ring adopts a boat conformation. In the crystal structure, the amino group is involved in both intra- and intermolecular N—H⋯O hydrogen bonds.
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