PROTECTION OF HYDROXY GROUPS BY INTRAMOLECULAR OXIDATIVE FORMATION OF METHOXYBENZYLIDENE ACETALS WITH DDQ

Article abstract of DOI:10.1016/S0040-4039(00)86975-0

On DDQ oxidation under anhydrous conditions, hydroxy groups located at α or β position to methoxybenzyl ether groups were readily protected by the intramolecular oxidative formation of acid-sensitive methoxybenzylidene acetals, which were further oxidized