Journal
TETRAHEDRON LETTERS
Volume 43, Issue 40, Pages 7171-7174Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(02)01679-9
Keywords
trifluoropropynyl lithium; N-methoxy-N-methylbenzamide; beta-trifluorormethyl enaminones
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beta-Trifluoromethyl enaminones 1 were prepared in good yields from the reaction of trifluoropropynyl lithium with N-methoxy-N-methylbenzamide, followed by quenching with H2O in the presence of a variety of amines. The use of hydrazine or benzamidine as an amine source in this reaction resulted in the formation of pyrazole 3 or pyrimidine 4. (C) 2002 Elsevier Science Ltd. All rights reserved.
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