申请人:Ciba-Geigy Corporation
公开号:US04695643A1
公开(公告)日:1987-09-22
Compounds of the formula Ia ##STR1## in which X and R.sup.1 to R.sup.6 are as defined in the claims, are obtainable by reacting monochlorosilanes of the formula II ##STR2## with tetrasubstituted ethylenes of the formula III ##STR3## X as Cl and Br can be replaced by ester groups of inorganic and organic acids. The compounds of the formula I and those with other ester groups are suitable especially as a protective-group reagent for hydroxyl, mercapto, carboxyl, amino and amide groups.
公式Ia的化合物##STR1##中,其中X和R.sup.1至R.sup.6如索赔中定义的那样,可通过将公式II的单氯硅烷与公式III的四取代乙烯反应而获得##STR2####STR3##X作为Cl和Br可以被无机和有机酸的酯基取代。公式I的化合物和其他酯基的化合物特别适用作为羟基、巯基、羧基、氨基和酰胺基的保护基试剂。