A new protocol for the nonhydrolytic synthesis of unsymmetrical siloxanes has been developed. The cross-coupling reaction of benzyloxysilanes with halosilanes catalyzed by Pd/C afforded various unsymmetrical siloxanes with co-production of benzyl halides.
An iron catalyst is shown for the first time to promote transfer hydrosilylation with silyl formates and is utilized for the silylation of alcohols. Attractive features of this protocol include the use of an earth-abundant transition-metal catalyst, mild reaction conditions, and the release of gases as the only byproducts (H 2 and CO 2 ).
铁催化剂首次被证明可促进甲酸甲硅烷基的转移氢化硅烷化,并用于醇的硅烷化。该协议的吸引人的特点包括使用地球上丰富的过渡金属催化剂、温和的反应条件以及作为唯一副产品 (H 2 和 CO 2 ) 的气体释放。
O-silylated ketene acetal chemistry1; divinyloxysilane derivatives as novel and useful bifunctional protecting agents for h-acidic materials
Novel reagents, bis(1-methoxy-2-methyl-1-propenyloxy) silanes () have been shown to be very useful bifunctional protecting agents for various types of H-acidic materials, such as diols, dithiols, diacids and their combined materials. The reaction proceeds rapidly under mild conditions to give the corresponding silylene derivatives in almost quantitative yields.