论文信息 - B(C(6)F(5))(3)-Catalyzed hydrosilation of imines via silyliminium intermediates

B(C(6)F(5))(3)-Catalyzed hydrosilation of imines via silyliminium intermediates

A broad range of benzaldimines and ketimines can be hydrosilated efficiently, employing B(C(6)F(5))(3) as a catalyst in conjunction with PhMe(2)SiH. Spectral evidence supports the intermediacy of a silyliminium cation with a hydridoborate counterion formed via abstraction of a hydride from PhMe(2)SiH by B(C(6)F(5))(3) in the presence of imines.

[1] Piers,et al. Studies on the mechanism of B(C(6)F(5))(3)-catalyzed hydrosilation of carbonyl functions , 2000, The Journal of organic chemistry.

[2] T. Marks,et al. Cocatalysts for metal-catalyzed olefin polymerization: activators, activation processes, and structure-activity relationships. , 2000, Chemical reviews.

[3] Piers,et al. Mechanistic studies on selectivity in the B(C6F5)3-catalyzed allylstannation of aldehydes: is hypercoordination at boron responsible? , 2000, Organic letters.

[4] W. Piers,et al. B(C(6)F(5))(3)-Catalyzed Silation of Alcohols: A Mild, General Method for Synthesis of Silyl Ethers. , 1999, The Journal of organic chemistry.

[5] H. Ishitani,et al. Catalytic enantioselective addition to imines. , 1999, Chemical reviews.

[6] K. Ishihara,et al. ARYLBORON COMPOUNDS AS ACID CATALYSTS IN ORGANIC SYNTHETIC TRANSFORMATIONS , 1999 .

[7] W. Piers,et al. Tris(pentafluorophenyl)boron-Catalyzed Hydrosilation of Aromatic Aldehydes, Ketones, and Esters , 1996 .

[8] Shizhong Zhang,et al. Modern Approaches to Silylium Cations in Condensed Phase , 1995 .

[9] Shizhong Zhang,et al. Silyl Cations in the Solid and in Solution , 1994 .

[10] J. B. Lambert,et al. Tricoordinate tin cations in solution under ambient conditions , 1992 .

[11] M. Brook,et al. Activated imines as carbon electrophiles: applications in alkaloid synthesis , 1986 .