Kuni Wakamatsu

Transition-metal catalyzed regioselective addition of PhMe2SiBEt3Li and Bu3SnBEt3Li to acetylenic compounds in the presence of methanol

Abstract Treatment of acetylenic compounds with PhMe 2 SiBEt 3 Li in the presence of a transition-metal catalyst affords vinylsilanes in good yields. Coexistence of methanoi as a proton source is essential for the completion of the reaction.

Et3B induced stereoselective radical addition of Ph3GeH to acetylenes and its application to isomerization of olefins

Abstract Triphenylgermane adds easily to acetylenes in the presence of Et 3 B to give (E)- or (Z)-alkenyltriphenylgermanes, respectively, under excellent control of regio- and stereoselectivities.

Transition-metal catalyzed silylzincation and silylalumination of acetylenic compounds

Abstract Dialkyl(dimethylphenylsilyl)zinclithium and trialkyl(dimethylphenylsilyl)aluminiumlithium add effectively to internal acetylenes as well as terminal ones in the presence of transition-metal catalysts to provide vinylsilanes with high stereo- and regioselectivities.

Copper catalyzed silylzincation of acetylenes

Abstract Dialkyl(dimethylphenylsilyl)zinclithium adds effectively to internal acetylenes as well as terminal acetylenes in the presence of CuCN catalyst.