Sequential [3+2] cycloaddition/rearrangement reaction of imidazolone nitrones and allenoates for the efficient synthesis of functionalized imidazolidinone
Sequential [3+2] cycloaddition/rearrangement reaction of imidazolone nitrones and allenoates is described. The reaction was carried out in refluxing toluene to provide the methylene imidazolidinone derivatives in high yield. It provides a simple and convenient strategy for the synthesis of functionalized imidazolidinones.