高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (6): 849.

• 论文 • 上一篇    下一篇

双烷基膦酸的合成和性质研究

胡文祥   

  1. 中国军事医学科学院毒物药物研究所, 北京, 100850
  • 收稿日期:1993-11-05 修回日期:1994-03-18 出版日期:1994-06-24 发布日期:1994-06-24
  • 作者简介:胡文祥,男,33岁,博士,副教授.
  • 基金资助:

    国家自然科学基金

Syntheses and Properties of Di-tertiary Alkylphosphinic Acids

HU Wen-Xiang   

  1. Institute of Pharmacology and Toxicology, Chinese Academy of Military Medical Sciences, Beijing, 100850
  • Received:1993-11-05 Revised:1994-03-18 Online:1994-06-24 Published:1994-06-24

摘要: 用格氏试剂与三氯化磷反应,继而水解、氧化,合成了3个高位阻双烷基膦酸,发现制备高位阻格氏试剂用叔氯代烷比叔溴代烷效果好;同时还用格氏试剂与亚磷酸酯反应,然后用Todd方法制备了二正辛基膦酸,发现亚磷酸二正丁酯比亚磷酸二乙酯反应效果好。此外,还考察了其1H、13C、31PNMR和酸电离性质与其取代基结构效应的关系。

关键词: 双叔烷基膦酸, 高位阻, 格氏试剂, Pka, 核磁共振

Abstract: Di-t-butyl, di-t-pentyl, di-t-octyl phosphinic acids were synthesized by the reaction of Grignard reagents with phosphorus trichloride, followed by oxidation with 30 percent hydrogen peroxide.The preparation of Grignard reagent from tertalkylchlorides is easier than that from tertalkylbromides, The structural identification and stereochemical analysis were also studied by pKa values, MSand 1H, 13C, 31P NMR.

Key words: Di-tertiary alkyl phosphinic acid, High hindering, Grignard reagent, PKa, NMR

TrendMD: