Synthesis of the Phospha-Wittig Reagent Me3P = P(C2F5) and Generation of a Phospanyl-Wittig Derivative Me3P = C(CF3)P(C2F5)F

IF 3.6 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemistry - A European Journal Pub Date : 2026-10-13 Epub Date: 2026-07-01 DOI:10.1002/chem.71278

Lukas Hartmann, Hannah Koch, Julia Bader, Beate Neumann, Jan-Hendrik Lamm, Hans-Georg Stammler, Mira Kessler, Berthold Hoge

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引用次数: 0

Abstract

In this contribution, we report the synthesis of the diphosphane P₂(C₂F₅)₄ and cyclotetraphosphane (PC₂F₅)₄ from the corresponding bromophosphanes P(C₂F₅)_xBr₃₋_x (x = 1, 2). The molecular structure of the cyclotetraphosphane was determined by x-ray diffraction analysis. Subsequent reaction of P₂(C₂F₅)₄ with trimethylphosphane (PMe₃) afforded the phosphanyl-functionalized phosphorus ylide (Wittig reagent) Me₃P = C(CF₃)P(C₂F₅)F, whereas treatment of (PC₂F₅)₄ with PMe₃ yielded the base-stabilized phosphinidene Me₃P = P(C₂F₅). The newly obtained species were characterized by multinuclear NMR spectroscopy, and the molecular structures were determined by x-ray diffraction analysis. Me₃P = C(CF₃)P(C₂F₅)F as well as Me₃P = P(C₂F₅) represent unique structural motifs that have not been observed within their respective substance class, underlining the remarkable versatility of perfluoroalkyl substituents.

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磷酸维提格试剂Me3P = P（C2F5）的合成及磷酸维提格衍生物Me3P = C(CF3)P(C2F5)F的生成

在这篇文章中，我们报道了由相应的溴膦P(C2F5)xBr3- x （x = 1,2）合成二膦P2(C2F5)4和环四膦（PC2F5）4。用x射线衍射法测定了环四磷酰胺的分子结构。P2(C2F5)4与三甲基磷化（PMe3）反应得到磷酰化的磷酰化（Wittig试剂）Me3P = C(CF3)P(C2F5)F，而PMe3处理（PC2F5）4得到碱稳定的磷酰二烯Me3P = P（C2F5）。通过多核磁共振光谱对新获得的物质进行了表征，并通过x射线衍射分析确定了其分子结构。Me3P = C(CF3)P(C2F5)F和Me3P = P（C2F5）代表了在其各自的物质类别中未观察到的独特结构基序，强调了全氟烷基取代基的显着多功能性。

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来源期刊

Chemistry - A European Journal 化学-化学综合

CiteScore

7.90

自引率

4.70%

发文量

1808

审稿时长

1.8 months

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