A novel synthesis of α- and β-morpholino enones by electron transfer sensitized photooxidation of 2-morpholinocyclopropanols
Abstract
An electron transfer mechanism is proposed to account for the photooxidation of 2-morpholinocyclopropanols 1 to the amino enone derivatives 2 and 3 in the presence of 9,10-dicyanoanthracene or triphenylpyrylium tetrafluoroborate and triplet oxygen.