Mo(CO)6-mediated synthesis of calix[4]arenes carrying β-hydroxy ketones or α,β-unsaturated-β-amino ketones

Mo(CO)6-mediated ring opening reactions of calix[4]arene isoxazolines/isoxazoles provide a new synthetic methodology for calix[4]arenes carrying bifunctional β-hydroxy ketones or α,β-unsaturated-β-amino ketones. Mo(CO)6 is a highly selective and convenient reagent for the ring opening process of these supramolecular isoxazolines/isoxazoles.