作者:Po-Yuan Chen、Tzu-Pin Wang、Michael Y. Chiang、Keng-Shian Huang、Cherng-Chyi Tzeng、Yi-Long Chen、Eng-Chi Wang
DOI:10.1016/j.tet.2011.04.070
日期:2011.6
water in the presence of DABCO at room temperature gave 3-hydroxy-1-(2-hydroxylphenyl)-3-arylpropan-1-ones (3a–i) as intermediates. Followed by an intramolecular dehydration of the 3a–i with the modified Mitsunobu’s reaction, the target flavanones (4a–i) were obtained. Moreover, the reaction of 1 and 2 at the same conditions but at reflux gave flavanones in one pot with good yields.
描述了用于合成黄烷酮的温和且环境友好的方法。的反应Ô -hydroxyacetophenones(1)和苯甲醛(2)的水在DABCO,在室温下存在,得到3-羟基-1-(2-羟基苯基)-3- arylpropan -1-酮(3A -我)作为中间体。继之以修饰的Mitsunobu反应进行3a – i的分子内脱水,获得了目标黄烷酮(4a – i)。此外,在相同条件下但在回流条件下1和2的反应在一个罐中以良好的收率得到了黄烷酮。