Heterocyclizations of Functionalized Heterocumulenes with C,N- and C,O-Dinucleophiles: III.* Cyclization of N-(1-Aryl-1-chloro-2,2,2-trifluoroethyl)-N'-arylcarbodiimides with 3-Substituted 1-Phenylpyrazol-5-ones
摘要:
Cyclization of N-(1-aryl-1-chioro-2,2,2-trifluoroethyl)-N'-arylcarbodiimides with 3-substituted 1-phenylpyrazol-5-ones yields 6-aryl-4-arylimino-1-phenyl-6-trifluoromethyl-1,4,5,6-tetrahydropyrazolo[4,3-e][1,3]oxazines.