Abstract
A facile, efficient, and novel approach to access 2‐substituted 2,3‐dihydro‐4(1H)‐azuleno[2,1‐d]pyrimidinones was developed by condensation of 2‐amino‐1‐carbamoyl‐3‐phenylazulene with ary1 aldehydes or ketones in ionic liquids by catalyzed p‐toluenesulfonic acid.
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