Treatment of terminal acetylenes (R1CCH) with secondary or tertiary alkyl iodides (R2I) in the presence of triethylborane provides the corresponding alkenyl iodides (R1C(I)CHR2) in good yields.
ICHINOSE, Y.;MATSUNAGA, SH.;FUGAMI, K., TETRAHEDRON LETT., 30,(1989) N4, C. 3155-3158
作者:ICHINOSE, Y.、MATSUNAGA, SH.、FUGAMI, K.
DOI:——
日期:——
Triethylborane Induced Stereoselective Radical Addition of R<sub>3</sub>SiH to Acetylenes and Stereoselective Reduction of Alkenyl Iodides with Tris(trimethylsilyl)silane
Triethylborane induced radical addition of various organosilanes (R3SiH) to acetylenes has been studied. Among them, tris(trimethylsilyl)silane (TTMSS) proved to be the best reagent for the hydrosilylation of acetylenic compounds in terms of yield and stereoselectivity. For instance, reaction of 1-dodecyne with TTMSS at room temperature for 3 h under Et3B catalyst provided (Z)-1-tris(trimethylsilyl)silyl-1-dodecene