作者:Christopher M Timperley、John F Broderick、Ian Holden、Ian J Morton、Matthew J Waters
DOI:10.1016/s0022-1139(00)00284-0
日期:2000.10
Twenty bis(fluoroalkyl) alkylphosphonates of structure (RFO)2P(O)R were prepared in 28–69% yields by treatment of alkylphosphonic dichlorides Cl2P(O)R [R=Me, Et, n-Pr, i-Pr] with fluoroalcohols RFOH [RF=CF3CH2, H(CF2)2CH2, C2F5CH2, C3H7CH2, (CF3)2CH] in diethyl ether in the presence of triethylamine. Reactions of isopropylphosphonic dichloride with two molar equivalents of alcohols and fluoroalcohols
二十双(氟代烷基)结构的烷基膦酸酯(R ˚F O)2 P(O)R是在28-69%的收率由处理烷基膦二氯化物的Cl制备2 P(O)R [R =甲基,乙基,Ñ -Pr, i-Pr]与氟代醇R F OH [R F = CF 3 CH 2,H(CF 2)2 CH 2,C 2 F 5 CH 2,C 3 H 7 CH 2,(CF 3)2在乙醚中,在三乙胺的存在下,用CH 2 Cl]。比较了异丙基二氯化膦与两个摩尔当量的醇和氟代醇的反应。在室温下12小时后,醇EtOH,n -PrOH,i-PrOH和n - BuOH给出了单酯和二酯的混合物,但异丙醇除外,后者仅给出了单酯。由烷氧基取代基引起的电子和空间效应令人满意地说明了产物比率。使用氟代醇CF 3 CH 2 OH,C 2 F 5 CH 2 OH,C 3 F 7 CH 2 OH和(CF 3)2CHOH,二酯为主。在此,氟代烷氧基取代基的电子效应稳定了中间体phosphor烷,例如。Cl