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3-(2,3-Di-meth-oxy-phen-yl)-2,3-di-hydro-1H-benzo[f]chromen-1-one. 2022

Jiha Sung
Department of Applied Chemistry, Dongduk Women's University, Seoul 136-714, Republic of Korea.

In the title compound, C21H18O4, the central pyran ring is in an envelope conformation and the dihedral angle between the benzene ring and naphthalene ring system is 88.31 (1)°. The meth-oxy groups at the ortho and meta positions of the benzene ring are tilted to the ring with C-C-O-C torsion angles of 105.9 (4) and 9.5 (5)°, respectively. In the crystal, pairwise C-H⋯O hydrogen bonds form R 2 2(14) inversion dimers, which are linked by another pair of C-H⋯O hydrogen bonds to form [210] chains in the crystal.

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