three-step procedure starting from commercially available 2,2,3,3,3-pentafluoropropanol. The reactions of these trifluoromethylated ynamines with some electrophiles, such as aldehydes, halogens or N-halosuccinimides (NXS), were investigated. The fluorinated ynamines reacted with aldehydes in the presence of a catalytic amount of Lewis acid to provide the corresponding α-(trifluoromethyl)-α,β-unsaturated
The reaction of trifluoromethylated ynamine with various halogenatingagents was investigated. N,N-dialkyl(3,3,3-trifluoro-1-propynyl)amines (1) smoothly reacted with bromine to give, after treatment with sodium hydrogen carbonate, N,N-dialkyl-2-bromo-3,3,3-trifluoropropanamide (3-Br) in good yields. The reaction of 1 with an equimolecular amount of N-halosuccinimide (NXS) in acetonitrile–water (3/2
研究了三氟甲基化的亚胺与各种卤化剂的反应。N,N-二烷基(3,3,3-三氟-1-丙炔基)胺(1)与溴平稳反应,经碳酸氢钠处理后得到N,N - N-二烷基-2-溴-3,3, 3-三氟丙酰胺(3-Br)收率高。的反应1与等摩尔量Ñ -halosuccinimide(NXS)在乙腈-水(3/2 V / V),得到相应的2-卤代-3,3,3- trifluoropropanamides(3-X )以良好至优异的产量。另一方面,治疗1与NXS在无水乙腈中的反应导致高产率形成加成产物7-X。用等分子量的NX 2 S在乙腈水溶液中处理7-X 1后,几乎以定量的方式生产了相应的2,2-二卤-3,3,3-三氟丙酰胺(8-X 1 X 2)。
German,L.S. et al., Doklady Chemistry, 1967, vol. 173, p. 381 - 385
作者:German,L.S. et al.
DOI:——
日期:——
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