A high temperature investigation using microwave synthesis for electronically and sterically disfavoured substrates of the Newman–Kwart rearrangement
作者:Jonathan D. Moseley、Philip Lenden
DOI:10.1016/j.tet.2007.02.101
日期:2007.5
Electronically deactivated and/or sterically hindered substrates undergo the Newman–Kwart rearrangement (NKR) at around 300 °C, beyond the range of most convenient and safe, small-scale laboratory equipment. We report here the convenient conversions of several difficult substrates using modern microwave technology, which has proven ideal for investigating this high temperature reaction in all but the most
电子灭活和/或空间受阻的底物会在约300°C的温度下经受Newman-Kwart重排(NKR),这超出了最方便,最安全的小型实验室设备的范围。我们在这里报告了使用现代微波技术可以轻松转换几种困难的底物的方法,事实证明,除最难处理的情况之外,该方法对于研究这种高温反应是理想的选择。另外,重新研究了几个先前报道的困难实例,并且由于阐述的各种原因,发现在这些条件下不需要高温。