119581-19-0Relevant articles and documents
Selective Instability of Trifluoromethyl Linked to Carbon. A Prerequisite for New Heterocyclizations with Ethyl 4,4,4-Trifluoroacetoacetate Arylhydrazones
Pilgram, Kurt H.,Skiles, Richard D.
, p. 139 - 143 (2007/10/02)
Highly fuctionalized pyrazoles, 2, and 1H-pyrazolopyridazinones 3 have been obtained in moderate yields from ethyl 4,4,4-trifluoroacetoacetate o-chlorophenylhydrazones 1 by treatment with sodium hydride in aprotic solvents.Treatment of 2 and 3 with