Electrolytic partial fluorination of organic compounds Part 25. Regioselective anodic fluorination of naphthalene- and pyridine-acetate and -acetonitrile derivatives
作者:Seiichiro Higashiya、Takayuki Sato、Toshio Fuchigami
DOI:10.1016/s0022-1139(97)00146-2
日期:1998.2
Anodic regioselective fluorination of α-phenylsulphenylated ethyl acetates and acetonitriles of 1-naphthalene and 2-pyridine derivatives was investigated. 1-Naphthalene derivatives were selectively fluorinated at the α-carbon using Et3N·3HF/CH3CN in high yields while those devoid of an α-phenylsulphenyl group gave non-regioselectively polyfluorinated products. On the contrary, α-phenylsulphenylated
研究了α-苯基磺苯基化的乙酸乙酯和1-萘和2-吡啶衍生物的乙腈的阳极区域选择性氟化。使用Et 3 N·3HF / CH 3 CN以高收率选择性地在α-碳上氟化1-萘衍生物,而没有α-苯基磺苯基的非萘衍生物则提供了非区域选择性的多氟化产物。相反,α-苯基磺苯基化的2-吡啶衍生物在CH 3 CN中以低收率得到了相应的α-氟化合物。在DME中获得的氟化产物收率更高。此外,通过添加Ph可以显着提高其收率2秒