Amine nucleophilic addition to nitroalkene as a new practical approach for the synthesis of fully substituted isoxazoline-N-oxide
作者:Cheng Zhong、Lekh Nath S. Gautam、Dawei Wang、Novruz G. Akhmedov、Jeffrey L. Petersen、Xiaodong Shi
DOI:10.1016/j.tet.2011.01.085
日期:2011.6
secondary amine nucleophilic addition to the nitroalkene was used to generate the active nitronate intermediate, followed by the sequentialaddition to aldehyde and ylide, giving the fully substituted isoxazoline-N-oxide in one-pot fashion. Mechanistic studies revealed the equilibrium nature of the diene intermediates, which provide the foundation for the asymmetricsynthesis of this interesting heterocycles