Synthesis, Spectroscopic and Crystal Structure Studies on Ethyl 5,7-Dimethyl Coumarin-4-Acetate
نویسندگان
چکیده
Ethyl ester of 5,7-dimethyl coumarin-4-acetic acid has been synthesized from 3,5-Xylenol in a two step sequence of reaction involving Pechmann cyclisation and acid catalyzed esterification. The title compound 2 crystallizes in Monoclinic form, space group P 1 21/c 1, with a = 8.6248(4) Ǻ, b = 18.9103(8) Ǻ, c = 8.4204(4) Ǻ, β = 101.241(2), V = 1347.00(11) Ǻ, D cal = 1.283 Mg/cm3, Z = 4. The molecule is stabilized by intermolecular C-H ... O bonds.
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