Rhodium-catalyzed synthesis of 2,3-diaryl-1,4-diketones via oxidative coupling of benzyl ketones using α-thioketone oxidizing reagent
作者:Mieko Arisawa、Guangzhe Li、Masahiko Yamaguchi
DOI:10.1016/j.tetlet.2012.12.107
日期:2013.3
no)benzene (dppBz) catalyzed the oxidative coupling reaction of aryl benzyl ketones giving 2,3-diaryl-1,4-diketones in high yields. 3,3-Dimethyl-1-methylthio-2-butanone was used as the oxidizing reagent, which was converted to 3,3-dimethyl-2-butanone and dimethyl disulfide. Rhodium enolates were catalytically formed from ketones, which underwent oxidative coupling using an organosulfur reagent.
RhH(PPh 3)4和1,2-双(二苯基膦基)苯(dppBz)催化了芳基苄基酮的氧化偶联反应,从而高产率地产生了2,3-二芳基-1,4-二酮。使用3,3-二甲基-1-甲基硫代-2-丁酮作为氧化剂,将其转化为3,3-二甲基-2-丁酮和二甲基二硫化物。烯酸铑是由酮催化形成的,酮是使用有机硫试剂进行氧化偶联的。