Synthesis and characterization of functionalized phosphenium ions, stabilized by two intramolecular dative P
Synthesis and characterization of functionalized phosphenium ions, stabilized by two intramolecular dative P
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DOI：
10.1016/s0022-328x(96)06938-0
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发表时间：
1997-05-15
影响因子：
2.3
通讯作者：
Reye, C
中科院分区：
文献类型：
--
作者：
Bezombes, JP;Carre, F;Reye, C
ArPH2 (Ar=[C6H3(CH2NMe2)(2)-2,6]) 3 在用三苯甲基阳离子处理时经历氢化物提取，得到稳定的鏻离子[ArPH]+BF4-4a。通过 3 与 BrCCl3 反应 (4b) 以及通过 3 锂化然后用 I-2 处理 (4c) 制备相同的阳离子。 ArLi 与 PX3（X=Cl 或 Br）反应生成稳定的鏻离子 [ArPX]X-+(-)，通过 LiAlH4 还原得到 3。相反，[ArPX]X-+(-) 的 DIBAL-H 还原得到 [ArPH]X-+(-)。最后一个反应构成了稳定且官能化的鏻离子向不同离子的转变。通过 [ArPH]+PF6-4e 的单晶 X 射线衍射分析证实了这些盐的结构。 (C) 1997 Elsevier Science S.A.
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.