Organic Phosphorus Compounds 52. Preparation and properties of ?-hydroxyalkyl-phosphonium salts and tertiary phosphine oxides
作者:Ludwig Maier
DOI:10.1002/hlca.19710540524
日期:——
(CH2OH)2P]Cl. Optimal pH values for the reactions are 8 to 9; at lower pH the conversion is too slow; at a higher pH, oxidative decomposition of the salts occurs. Conversion of the salts to tertiary phosphine oxides (RCHOHCH2)3P O (R ClCH2; CH3) with loss of the hydroxymethyl group is best carried out with chlorine at pH 5 to 7. The yields are usually 60 to 90%.
新的三(2-(羟烷基)-(羟甲基)-phospho盐:[(RCHOHCH 2)3 PCH 2 OH] Cl(I,R = ClCH 2 ; III,R = CH 3)通过高收率形成在碱性条件下四-(羟甲基)-氯化phosph(Tetrakis)与环氧化物的反应 在相同条件下,氧化苯乙烯仅产生双取代的产物[[(PhCHOHCH 2)2(CH 2 OH)2 P] Cl。反应的最佳pH值为8至9。在较低的pH值下,转化速度太慢;在较高的pH下,盐会发生氧化分解。盐转化为叔膦氧化物(RCHOHCH 2)最好是在pH值为5至7的氯气中进行3 P O(R ClCH 2; CH 3)的还原,以除去羟甲基。产率通常为60%至90%。