Tetrahedron Letters p. 1829 - 1832 (1996)
Update date:2022-08-29
Topics:
Yamanaka, Hiroki
Takekawa, Tadashi
Morita, Kenji
Ishihara, Takashi
Gupton, John T.
β-Trifluoromethylated vinamidinium salt (1) was prepared in high yield by the reaction between 3,3,3-trifluoropropanoic acid and phosphorus oxychloride in N,N,-dimethylformamide at 70°C for 1h. This salt 1 reacted readily with bifunctional nitrogen nucleophiles, such as amidine and hydrazine derivatives, in acetonitrile or dimethyl sulfoxide to furnish the corresponding trifluoromethylated azaheterocycles in good yields.
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