A Facile Stereoselective Synthesis of (<i>Z</i>,<i>E</i>)-2-Silyl-Substituted 1,3-Dienes via Palladium-Catalyzed Cross-Coupling Reaction
作者:Ming-Zhong Cai、Xing-Lin Ye、Ping-Ping Wang
DOI:10.1055/s-2005-872174
日期:——
(E)-α-Halovinylsilanes undergo palludium-catalyzed cross-coupling reactions with (E)-alkenylzirconium complexes to afford stereoselectively (Z,E)-2-silyl-substituted 1,3-dienes in good yields.
Peterson Allenation Using (<i>Z</i>)-(1-Lithio-1-alkenyl)trimethylsilanes
作者:Takeshi Takeda、Akira Tsubouchi、Takashiro Kira
DOI:10.1055/s-2006-951474
日期:2006.9
Lithium alkoxides of β-silylallylic alcohols underwent the Peterson elimination in DMF to give allenes. Allenes were also directly obtained by a Peterson allenation reaction from carbonyl compounds using (Z)-(1-lithio-1-alkenyl)trimethylsilanes in one pot.
Halogen-magnesium exchange of various aryl halides is achieved with a magnesium ate complex at low temperatures; Tributylmagnesate ((Bu3MgLi)-Bu-n) induces facile iodine-magnesium exchange at -78 degreesC. Dibutylisopropylmagnesate ((PrBu2MgLi)-Pr-i-Bu-n) is more reactive than (Bu3MgLi)-Bu-n, and this reagent accomplishes selective bromine-magnesium exchange at -78 degreesC. This procedure is utilized for the preparation of various polyfunctionalized arylmagnesium species. The exchange of alkenyl halides using this method proceeds with retention of configuration of the double bond.
Preparation of α-Haloacylsilane and its Use for Triethylborane-Induced Reformatsky Type Reaction
作者:Y Horiuchi
DOI:10.1016/00404-0399(50)0985l-
日期:1995.7.24
FISHER, R. P.;ON, H. P.;SNOW, J. T.;ZWEIFEL, G., SYNTHESIS, BRD, 1982, N 2, 127-129
作者:FISHER, R. P.、ON, H. P.、SNOW, J. T.、ZWEIFEL, G.