作者:Ryoka Matsushima、Tsuneo Kishimoto、Morio Suzuki、Motonobu Morioka、Hideo Mizuno
DOI:10.1246/bcsj.53.2938
日期:1980.10
corresponding 2′-hydroxychalcones in benzene, pyridine, acetonitrile etc., the yields varying from 0 to 70% with substituents. The reaction is depressed by the addition of 1,3-pentadiene, nitrosobenzene, or acrylonitrile. On the other hand, flavanone and 4-chromanone undergo photoreduction in 2-propanol to give reductive coupling products and solvent adducts as isomeric mixtures. 7,8-Benzoflavanone does
母体和取代的黄烷酮经过吡喃酮环的光化学开环,在苯、吡啶、乙腈等中得到相应的 2'-羟基查耳酮,产率从 0% 到 70% 不等,有取代基。加入 1,3-戊二烯、亚硝基苯或丙烯腈可抑制反应。另一方面,黄烷酮和 4-色满酮在 2-丙醇中进行光还原,得到还原性偶联产物和溶剂加合物作为异构体混合物。7,8-苯并黄酮在 2-丙醇中不发生光还原反应,而是发生开环反应。已经根据最低三重态中的相对贡献和 π,π* 特性讨论了机制。