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在酸性条件和锇催化下 ,利用N 溴乙酰胺实现了具有高度位置选择性和立体选择性的对 甲氧基苯基乙烯基膦酸二异丙基酯的溴羟基化反应 ,反应中柠檬酸作为酸性添加剂和螯合剂。C1上完全的溴羟基化结果意味着在催化过程中应该为 [2 +2 ]机理
Under acidic conditions and osmium catalysis, the bromo-hydroxylation of p-methoxyphenylvinylphosphonic acid diisopropyl ester with a high degree of position selectivity and stereoselectivity was achieved with N-bromoacetamide. In the reaction, citric acid As acidic additives and chelating agents. Complete bromine hydroxylation on C1 means that the mechanism should be [2 +2] during the catalysis