Triethylaluminum Catalyzed Ring Opening Reaction of 1-Acetyl-2-[(trimethylsilyl)methyl]cyclobutanes. Stereoselective Preparation of (Z)-Enol Trimethylsilyl Ethers
作者:Tooru Fujiwara、Atsushi Suda、Takeshi Takeda
DOI:10.1246/cl.1991.1619
日期:1991.9
The triethylaluminum catalyzed ring opening reaction of 1-acetyl-2-[(trimethylsilyl)methyl]cyclobutanes gave (Z)-6-(trimethylsiloxy)-1,5-heptadienes stereoselectively. The starting materials were easily prepared by the 1,4-addition of (trimethylsilyl)methylmagnesium chloride to 1-cyclobutenyl ketones.
ZnBr<sub>2</sub>-catalyzed Stereospecific 1,4-Elimination of 1-Methoxymethyl-2-(trimethylsilylmethyl)cyclobutanes. Stereoselective Preparation of 1,1,5-Trisubstituted (<i>E</i>)- and (<i>Z</i>)-1,5-Dienes
作者:Tooru Fujiwara、Atsushi Suda、Takeshi Takeda
DOI:10.1246/cl.1992.1631
日期:1992.9
stereoselective addition of alkylmetals to 2-(trimethylsilylmethyl)-1-cyclobutyl ketones and the ZnBr2-catalyzed stereospecific ring-opening reaction of resulting 1-methoxymethyl-2-(trimethylsilylmethyl)cyclobutanes gave 1,1,5-trisubstituted 1,5-dienes with high stereoselectivity.