Reactions of formylchromone derivatives. Part 1. Cycloadditions to 2- and 3-(aryliminomethyl)chromones
Abstract
The reactions of several 2- and 3-(aryliminomethyl)chromones with various chloroketens have been investigated. Whereas the 2-substituted chromones gave 2-(4-oxoazetidin-2-yl)chromones, the 3-substituted chromones yielded fused pyridone derivatives.