diastereoselective and enantioselective formal [4+1] ylide annulation of chiral sulfonium salts with various substituted α-substituted nitroalkene leading to opticallyactive isoxazoline N-oxides using CF3SO3− as a key anion has been explored. The salient features of this methodology include high diastereo- and enantioselecties, easily available starting materials, mild reaction conditions, simple procedure
已经探索了使用CF 3 SO 3 -作为关键阴离子的手性锍盐与各种取代的α-取代硝基烯烃的非对映选择性和对映选择性形式[4+1]叶立德环化产生光学活性异恶唑啉N-氧化物。该方法的显着特点包括高非对映选择性和对映选择性、易于获得的起始材料、温和的反应条件、简单的程序、广泛的底物范围以及异恶唑啉N-氧化物可方便地转化为其他功能化化合物。