THE ADDITION REACTION OF METALATED 2-ALLYLOXYBENZIMIDAZOLES TO ALDEHYDES AND THE TRANSFORMATION OF THE ADDUCTS TO VINYLOXIRANES

Abstract
Treatment of 2-allyloxybenzimidazoles with butyllithium followed by cadmium iodide generates the metalated allylic ethers, which in turn react with aldehydes to form adducts selectively at α-carbon of the allylic ethers. The adducts are converted to vinyloxiranes in good yields on treatment with sodium hydride.