Syntheses and Carbonyliridium Complexes of Unsymmetrically Substituted Fluorous Trialkylphosphanes: Precision Tuning of Electronic Properties, Including Insulation of the Perfluoroalkyl Groups
作者:Luke J. Alvey、Ralf Meier、Tibor Soós、Paul Bernatis、John A. Gladysz
DOI:10.1002/1099-0682(200009)2000:9<1975::aid-ejic1975>3.0.co;2-m
日期:2000.9
substituted phosphane P[(CH2)mRf8]3 (m = 5, 6) is similarly prepared from PH3 and H2C=CHCH2CH2CH2Rf8, analogously to previously reported homologs [m = 2 (2), 3 (4), 4 (5)]. Reactions of 10−13 and 2, 4, 5, and 6 with [Ir(COD)Cl]2 and CO give trans-Ir(CO)(Cl)(PR2R′)2 (70−83%). The IR νCO values show a monotonic decrease with increasing numbers of CH2 groups. Phosphanes 13, 5, and 6 have the most CH2 groups,
碘化物的反应 I(CH2)mRf8 [m = 2−4; Rf8 = (CF2)7CF3] 和 LiPH2 · DME (-45 °C, THF) 得到初级膦 PH2(CH2)mRf8 (7-9; 48-76%)。7 和 H2C=CHCH2Rf8、8 和 H2C=CHRf8 或 H2C=CHCH2CH2Rf8 和 9 和 H2C=CHCH2Rf8 的自由基引发反应 (100 °C),得到标题磷烷 P[(CH2)mRf8]2[(CH2)m 'Rf8] [m/m' = 2/3 (10), 3/2 (11), 3/4 (12), 4/3 (13); 70−76%]。对称取代的磷烷 P[(CH2)mRf8]3 (m = 5, 6) 类似地从 PH3 和 H2C=CHCH2CH2CH2Rf8 制备,类似于先前报道的同系物 [m = 2 (2), 3 (4), 4 (5 )]。10-13 和 2、4、5