It was demonstrated that nitrosylsulfuric acid can be successfully used as a tandem nitrosating and oxidizing agent in the synthesis of 3,5-diarylisoxazoles from 1,2-diarylcyclopropanes. The reaction proceeds highly regioselectively in the case of symmetric diarylcyclopropanes. The mixtures of regioisomeric 3,5-diarylisoxazoles were obtained from non-symmetric 1,2-diarylcyclopropanes.
结果表明,
亚硝基硫酸可以成功地用作串联亚硝化剂和氧化剂,用于从1,2-二芳基
环丙烷合成3,5-二芳基
异噁唑。在反应过程中,对于对称二芳基
环丙烷,反应具有高度的位选择性。从非对称1,2-二芳基
环丙烷中获得了位异构体3,5-二芳基
异噁唑的混合物。