The reaction of tetrachlorodiphosphines [Cl2P(CH2)nPCl2; n = 2-4] with fluorous aromatic precursors 4-bromo(perfluorohexyl)benzene and 4-(perfluorohexyl)phenol gave a series of fluorous-tagged diphosphines [(p-C6F13C6H4)2P(CH2)nP(C6H4C6F13-p)2; n = 2-4] and a new diphosphonite [(p-C6F13C6H4O)2P(CH2)3P(OC6H4C6F13-p)2]. The improved synthesis of 1,3-bis(dichlorophosphino)propane (dcpp), involved the facile chlorination of the corresponding primary phosphine with triphosgene. Fluorinated diimines RN=C(CH3)C(CH3)=NR, where R = p-C6H4C6F13 or p-C6H4C8F17 have also been prepared, and were found to be air-stable alternatives to the highly air-sensitive phosphorus-containing ligands. All compounds were characterised by a variety of techniques including NMR, IR, MS and microanalysis. The successful reduction of the phosphine-oxides [(p-C6F13C6H4)2P(O)(CH2)nP(O)(C6H4C6F13-p)2; n = 2,3] with phenylsilane is also presented.
四
氯二膦[Cl2P(
CH2)nPCl2;n = 2-4]与多
氟芳香族前体 4-
溴(
全氟己基)苯和 4-(
全氟己基)
苯酚反应,得到一系列多
氟标记
二膦[(p-C6F13C6H4)2P( )nP(C6H4C6F13-p)2;n = 2-4] 和一种新的
二膦酸盐 [(p-C6F13C6H4O)2P( )3P(OC6H4C6F13-p)2]。1,3-双(二
氯膦)
丙烷(dcpp)的改进合成涉及相应的伯膦与
三光气的简单
氯化反应。此外,还制备了
氟化二
亚胺 RN=C(
CH3)C( )=NR,其中 R = p-C6H4C6F13 或 p-C6H4C8F17,并发现它们是对空气高度敏感的含
磷配体的空气稳定替代品。通过核磁共振、红外光谱、质谱和显微分析等多种技术对所有化合物进行了表征。此外,还介绍了用苯基
硅烷成功还原膦氧化物[(p-C6F13C6H4)2P(O)( )nP(O)(C6H4C6F13-p)2;n = 2,3]的过程。