The treatment of F-alkyl ketones with sodium diethyl phosphite in tetrahydrofuran at −10 to 0 °C gave high yields of 1-substituted F-1-alkenyl phosphates, which readily reacted with amidine or hydrazine derivatives at room temperature to afford the corresponding fluorinated pyrimidines or pyrazoles, respectively, in good to excellent yields.
在四氢呋喃中在 -10 至 0 °C 下用二乙基亚磷酸钠处理 F-烷基酮,得到高产率的 1-取代 F-1-烯基磷酸酯,其在室温下容易与脒或肼衍生物反应,得到相应的氟化物。嘧啶类或吡唑类,分别具有良好到极好的产率。
Enantioselective Synthesis of Benzothiazolines from Fluoroalkyl Ketones Using Chiral Imidazoline−Phosphoric Acid Catalysts
first enantioselectivesynthesis of cyclic N,S-ketals having tetrasubstituted chiral center through intramolecular cyclization between carbonyl compounds and aminothiols has been developed. The reaction of fluoroalkyl ketones with aminobenzenethiols using a chiral imidazoline−phosphoric acid catalyst afforded products in high yields with high enantioselectivity. The observed enantioselectivity is explained
Study on the effect of diand trifluoromethyl groups on the baeyer-villiger reaction
作者:Tomoya Kitazume、Junichi Kataoka
DOI:10.1016/s0022-1139(96)03500-2
日期:1996.10
Case studies of the Baeyer-Villiger reaction applied to di- and trifluoromethylketone derivatives and the effect of the fluoromethyl groups on the Baeyer-Villiger reaction, are described.
ISHIHARA, TAKASHI;KUROBOSHI, MANABU, J. FLUOR. CHEM., 37,(1987) N 1, 113-118