Synthesis and characterization of functionalized phosphenium ions, stabilized by two intramolecular dative P<-N bonds

被引:23
作者
Bezombes, JP [1 ]
Carre, F [1 ]
Chuit, C [1 ]
Corriu, RJP [1 ]
Mehdi, A [1 ]
Reye, C [1 ]
机构
[1] UNIV MONTPELLIER 2,LAB PRECURSEURS ORGANOMET MAT,UMR 5637 CNRS,F-34095 MONTPELLIER 5,FRANCE
关键词
stabilized phosphenium ion; X-ray structure analysis; DIBAL-H;
D O I
10.1016/S0022-328X(96)06938-0
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
ArPH2 (Ar=[C6H3(CH2NMe2)(2)-2,6]) 3 undergoes hydride abstraction on treatment with trityl cation to give the stabilized phosphenium ion [ArPH]+BF4- 4a. The same cation was prepared by reaction of 3 with BrCCl3 (4b) and also by lithiation of 3 followed by treatment with I-2 (4c). ArLi reacts with PX3 (X=Cl or Br) to give the stabilized phosphenium ion [ArPX]X-+(-) which affords 3 by LiAlH4 reduction. In contrast, DIBAL-H reduction of [ArPX]X-+(-) gives [ArPH]X-+(-). This last reaction constitutes a transformation of a stabilized and functionalized phosphenium ion into a different ion. Confirmation of the structure of these salts was given by single-crystal X-ray diffraction analysis of [ArPH]+PF6- 4e. (C) 1997 Elsevier Science S.A.
引用
收藏
页码:81 / 90
页数:10
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