C−C Bond Formation via C−H Bond Activation Under Protic Conditions: On the Role of Phosphane Ligand and Cosolvent
作者:Marc-Olivier Simon、Rémi Martinez、Jean-Pierre Genet、Sylvain Darses
DOI:10.1021/jo902264u
日期:2010.1.1
Effective conditions for the hydroarylation of vinylsilanes, allowing functionalization of various aromatic ketones in good yields at low temperature, using isopropanol, a protic solvent, are reported. Moreover, conducting this C−C bond-forming reaction under conditions similar to those used for hydride transfer reduction, the reduction of the ketone could be suppressed, simply by using acetone cosolvent
据报道,使用质子溶剂异丙醇,乙烯基硅烷的氢芳基化的有效条件允许在低温下以良好的产率官能化各种芳族酮。而且,在类似于用于氢化物转移还原的条件下进行该CC键形成反应,仅通过使用丙酮助溶剂作为氢化物受体,就可以抑制酮的还原。用廉价且无毒的溶剂进行的该反应在质子条件下用低价钌络合物构成了第一个C(sp 2)-H活化。