Trimethylsilyl trifltate catalyzed aldol-type reaction of enol silyl ethers and acetals or related compounds
作者:Shizuaki Murata、Masaaki Suzuki、Ryoji Noyori
DOI:10.1016/s0040-4020(01)86671-0
日期:1988.1
condensation of enol trimethylsllyl ethers with acetals, orthoformate, or 2-acetoxytetrahydrofuran or -pyrans to give the corresponding β-alkoxy carbonylcompounds. Reaction of enolsilylethers and carboxonium triflate ion-pair intermediates occurs via acyclic transition states and exhibits moderate to high erythro selectivity independent of the geometry (E/Z) of the enolsilylethers.
Condensation of enol silyl ethers with 2-acetoxytetrahydrofuran and -tetrahydropyrans
作者:S. Murata、R. Nayori
DOI:10.1016/s0040-4039(00)87406-7
日期:1982.1
Trimethylsilyltrifluoromethanesulfonatecatalyzesstereoselectivecondensation of enolsilylethers and 2-acetoxytetrahydrofuran or -tetrahydropyran derivatives.