Optically active 4-aryl-4-trifluoromethyl-4H-1,3-oxa(thia)zines
摘要:
S(-)-4-Aryl-4-(N-acylamino)-5,5,5-trifluoropentan-2-ones have been reacted with phosphorus pentachloride and pentasulfide to yield S(-)-4-aryl-4-trifluoromethyl-4H-1,3-oxazines and S(+)-4-aryl-4-trifluoromethyl-4H-1,3-thiazines, respectively. (C) 2009 Elsevier B.V. All rights reserved.