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
A very simple and efficient catalytic system for the hydroarylation of olefins by aromatic ketones and Michael acceptors using simple and inexpensive ruthenium trichloride as a ruthenium source is described. These very mild conditions (dioxane at 80 C) appeared to be highly compatible, tolerant, and selective toward various functional groups, and the ease of the protocol is highly convenient for synthetic purposes.
Kakiuchi; Murai, Russian Journal of Organic Chemistry, 1996, vol. 32, # 2, p. 241 - 247
作者:Kakiuchi、Murai
DOI:——
日期:——
Catalytic Addition of Aromatic Carbon–Hydrogen Bonds to Olefins with the Aid of Ruthenium Complexes
Ru(H)2(CO)(PPh3)3, have been found to catalyze the addition of ortho C–H bonds of aromatic ketones to olefins with a high degree of efficiency and selectivity. 2′-Methylacetophenone reacts with various types of terminal olefins to give 1 : 1 coupling products in good to excellent yields. The C–C bond formation takes place exclusively at the terminal carbon atom of olefins except for styrene which affords a mixture