A facile and general synthesis of tropolonyl-substituted chalcone derivatives
A facile and general synthesis of a series of new troplonyl-substituted chalcone derivatives by Claisen-Schmidt condensation reaction from 3-acetyltropolone and substituted benzaldehydes as well as pyridine aldehydes is described. The method using 5% aq. KOH as catalyst and 50% aq. methanol as solvent is attractive since it specifically generates (E )-isomers with high yields under mild reaction conditions.
Chang, Mingqin,Li, Yang,Zhang, Hong,Gao, Wentao
experimental part
p. 269 - 273
(2010/10/03)
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