Selective formation of aminoxyls or oxaziridines by oxidation of 2,2,4,4-tetrasubstituted oxazolidines
作者:Mourad Hamdani、Denise Scholler、James Bouquant、Alexandre Feigenbaum
DOI:10.1016/0040-4020(95)00899-3
日期:1996.1
3-oxazolidines 1 with m-chloroperbenzoic aicd was reinvestigated. Aminoxyls 5 are isolated in good yields in ether at −15 °C, or in anhydrous dichloromethane at 0 °C. Oxaziridines 4 are promoted at room temperature, or in the presence of an acid. In any case, short reaction times prevented the degradation of aminoxyls and oxaziridines. The competition between oxaziridines 4 and aminoxyls 5 is ruled by
重新研究了2,2,4,4-四取代-1,3-恶唑烷1与间氯过苯甲酸的反应性。在-15°C的乙醚中或在0°C的无水二氯甲烷中,高收率的氨基甲酸酯5被分离出来。在室温下或在酸的存在下促进恶唑烷4。在任何情况下,短的反应时间都可以防止氨基二甲苯基和恶唑烷的降解。恶唑烷亚胺亚胺平衡决定了恶唑烷4和氨基甲5之间的竞争。