Rhodium-Catalyzed Acyl-Transfer Reaction between Benzyl Ketones and Thioesters: Synthesis of Unsymmetric Ketones by Ketone CO–C Bond Cleavage and Intermolecular Rearrangement
作者:Mieko Arisawa、Manabu Kuwajima、Fumihiko Toriyama、Guangzhe Li、Masahiko Yamaguchi
DOI:10.1021/ol3017148
日期:2012.7.20
In the presence of catalytic amounts of RhH(CO)(PPh3)3 and 1,2-bis(diphenylphosphino)benzene (dppBz), acyl groups were transferred between benzyl ketones and thioesters/aryl esters. The rhodium complex catalyzed the cleavage of ketone CO–C bonds and intermolecular rearrangement giving unsymmetric ketones. The acyl-transfer reaction also occurred with 1-(p-chlorophenyl)-3-(p-cyanophenyl)propane-2-one
在催化量的RhH(CO)(PPh 3)3和1,2-双(二苯基膦基)苯(dppBz)存在下,酰基在苄基酮和硫酯/芳基酯之间转移。铑配合物催化酮CO-C键的裂解和分子间重排,产生不对称的酮。酰基转移反应也与1-(对氯苯基)-3-(对氰基苯基)丙烷-2-酮发生,得到不对称的酮。