One-pot cascade ring enlargement of isatin-3-oximes to 2,4-dichloroquinazolines mediated by bis(trichloromethyl)carbonate and triarylphosphine oxide
作者:Jinjing Qin、Zhenhua Li、Shengzhe Ma、Lixian Ye、Guoqiang Jin、Weike Su
DOI:10.1080/10426507.2020.1782910
日期:2020.12.1
Abstract An efficient and convenient one-pot cascade synthesis of 2,4-dichloroquinazolines directly from isatin-3-oximes with the addition of bis(trichloromethyl)carbonate and triarylphosphine oxide was developed, leading to substituted quinazolines in moderate to excellent yields. The efficiency of this transformation was demonstrated by compatibility with a range of functional groups. Thus, the method