Visible light triggered regioselective ring expansion of N-tosylaziridines: An efficient approach to 2-nitroazetidines
作者:Ritu Kapoor、Shubhangi Tripathi、Sachchida N. Singh、Twinkle Keshari、Lal Dhar S. Yadav
DOI:10.1016/j.tetlet.2017.08.042
日期:2017.10
Visible light induced ring expansion of N-tosylaziridines with 1-bromo-1-nitroalkanes to afford 2-nitroazetdines in moderate to excellent yields with high regio- and diastereoselectivity is reported. The salient features of the protocol include the first synthesis of 2-nitroazetidines, operational simplicity, utilization of clean, inexpensive and sustainable resources like visible light and atmospheric
据报道,可见光诱导的N-甲苯磺酰氮杂环丁烷与1-溴-1-硝基烷烃的扩环,以中等至优异的产率提供了2-硝基氮杂环丁烷,具有很高的区域选择性和非对映选择性。该方案的显着特征包括首次合成2-硝基氮杂环丁烷,操作简便,在室温下以一锅法在光氧化还原催化下利用清洁,廉价和可持续的资源(例如可见光和大气中的氧气)。