Yes, nitrenes did “N,O”! Intermolecular addition of nitrene to enecarbamates and enesulfonamides gives oxyamidated products in excellent yields of up to 98 % and with good levels of stereoselectivity. Complete regioselectivity is also observed, leading to the formation of N,O‐acetals which can further react with various nucleophiles under acidic conditions (see scheme; TcesNH2=trichloroethylsulfamate)
是的,氮烯做了“ N,O”!在烯
氨基甲酸酯和烯磺酰胺中分子间加成氮,可以使酰胺化的产物具有高达98%的优良收率和良好的立体选择性。还观察到完全的区域选择性,导致N,O-
缩醛的形成,其可以在酸性条件下与各种亲核试剂进一步反应(参见方案; TcesNH 2 =三
氯乙基氨基磺酸盐)。