N-Halogeno compounds part 17. Precursors of NF-TEDA reagents: quaternary salts of 1,4-diazabicyclooctane containing fluoro-anions, and their Lewis acid-Lewis base adducts with boron trifluoride, phosphorus pentafluoride and sulphur trioxide
作者:R.Eric Banks、Mohamed K. Besheesh、Suad N. Mohialdin-Khaffaf、Iqbal Sharif
DOI:10.1016/0022-1139(96)03395-7
日期:1996.5
Methods are described for the synthesis of 1-alkyl-4-aza-1-azoniabicyclo[2.2.2]octane salts [R+N(CH2CH2)3NX− (R = CH3, CH2Cl, C2H5, CF3CH2, n-C8H17; X− = CF3SO3−, BF4−, PF6−)] and of related 1:1 adducts Lewis acids [X− R+N(CH2CH2)3N+LA− (R = CH3, CH2Cl; X− = CF3SO3−, BF4−, PF6−; LA = BF3, PF5, SO3)] used in the development of site-selective electrophilic fluorinating agents of the 1-alkyl-4-fluoro-1
方法的1-烷基-4-氮杂-1-氮鎓二环[2.2.2]辛烷盐[R合成描述+ N(CH 2 CH 2)3 NX -(R = CH 3,CH 2氯,C 2 ħ 5,CF 3 CH 2,NC 8 ħ 17 ; X - = CF 3 SO 3 -,BF 4 -,PF 6 -)]和相关的1:1个加合物的路易斯酸[X - R + N(CH 2通道2)3 Ñ + LA -(R = CH 3,CH 2氯; X - = CF 3 SO 3 -,BF 4 -,PF 6 - ; LA = BF 3,PF 5,SO 3)用于开发] 1-烷基-4-氟-1,4-二氮杂双环[2.2.2]辛烷类的位点选择性亲电子氟化剂(Selectfluor TM试剂)。列出了盐及其加合物的详细NMR数据(1 H,19 F,13 C,11 B,31 P)。