描述了一种通过3-肉桂酰基对苯二酚与苯肼的缩合反应轻松合成一些新颖的( E )-3-苯乙烯基-1-苯基环庚[ c ]吡唑-8(1 H )-一。所有合成的化合物均以62-69%的高收率获得,其结构通过IR,1 H NMR,MS和元素分析进行了表征。该程序使得在短的反应时间内容易获得与托酮融合的吡唑衍生物,并且以良好的收率获得了产物。
A Facile and General Synthesis of Tropolonyl-Substituted Chalcone Derivatives
作者:Mingqin Chang、Yang Li、Hong Zhang、Wentao Gao
DOI:10.3184/030823410x12740293863464
日期:2010.5
A facile and generalsynthesis 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
A facile synthesis of some novel ( E )-3-styryl-1-phenylcyclohepta[ c ]pyrazol-8(1 H )-ones via the condensation reaction of 3-cinnamoyltropolones with phenylhydrazine is described. All the synthesized compounds were obtained in good yields of 62–69 % and their structures were characterized by IR, 1H NMR, MS, and elemental analysis. This procedure offers easy access to tropone-fused pyrazole derivatives
描述了一种通过3-肉桂酰基对苯二酚与苯肼的缩合反应轻松合成一些新颖的( E )-3-苯乙烯基-1-苯基环庚[ c ]吡唑-8(1 H )-一。所有合成的化合物均以62-69%的高收率获得,其结构通过IR,1 H NMR,MS和元素分析进行了表征。该程序使得在短的反应时间内容易获得与托酮融合的吡唑衍生物,并且以良好的收率获得了产物。