A facile synthesis of 4(3H)-pyrimidinones via [4 + 2] cycloaddition utilizing trimethylsilylketene
The [4+2]cycloaddition reaction utilizing trimethylsilylketene with 1,3-diaza-1,3-dienes smoothly proceeded to give the desired cycloadducts, 4(3H)-pyrimidinones, in moderate to high yields.