Multicomponent Coupling Cyclization Access to Cinnolines via in Situ Generated Diazene with Arynes, and α-Bromo Ketones
作者:Wen-Ming Shu、Jun-Rui Ma、Kai-Lu Zheng、An-Xin Wu
DOI:10.1021/acs.orglett.5b03236
日期:2016.1.15
A transition-metal-freemulticomponent coupling cyclization reaction was explored involvingarynes, tosylhydrazine, and α-bromo ketones. The reaction proceeds via a formal [2 + 2 + 2] cycloaddition, giving access to cinnoline derivatives in moderate yields under mild conditions. Three chemical bonds were formed—two C–N bonds and one C–C bond—in a single step.