Replacing the carbonyl's oxygen with the difluoromethyl group
摘要:
Aldehydes or ketones were reacted with 2-(trimethylsilyl)-1,3-dithiane (1) and the products reduced to the corresponding dithianes using tetrafluoroboric acid and sodium borohydride. These sulfur containing Compounds were reacted with bromine trifluoride under mild conditions (1-2 min, 0 C) with a net result of replacing the carbonyls' oxygen with the desired difluoromethyl moiety. (C) 2008 Elsevier Ltd. All rights reserved.