Reactivity of phospha-Wittig reagents towards NHCs and NHOs

Gupta Priyanka; Siewert Jan-Erik; Wellnitz Tim; Fischer Malte; Baumann Wolgang; Beweries Torsten; Hering-Junghans Christian

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Reactivity of phospha-Wittig reagents towards NHCs and NHOs

机译：磷磷司试剂对NHCS和NHOS的反应性

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Phospha-Wittig reagents, RPPMe3 (R = Mes* 2,4,6-tBu(3)-C6H2; (Mes)Ter 2,6-(2,4,6-Me3C6H2)-C6H3; (Dip)Ter 2,6-(2,6-iPr(2)C(6)H(3))-C6H3), can be considered as phosphine-stabilized phosphinidenes. In this study we show that PMe3 can be displaced by NHCs or NHOs. Interestingly, phosphinidene-like reactivity results in a subsequent C(sp(2))-H activation of the exocyclic CH2 group in NHOs. This concept was further extended to allyl-apended NHOs, which resulted in phosphine-substituted allyl species.

机译：磷光Wittig试剂，RPPMe3（R=Mes*2,4,6-tBu（3）-C6H2；（Mes）Ter 2,6-（2,4,6-Me3C6H2）-C6H3；（Dip）Ter 2,6-（2,6-iPr（2）C（6）H（3））-C6H3）可以被认为是膦稳定的亚膦。在这项研究中，我们发现PMe3可以被NHC或NHO取代。有趣的是，类似亚膦的反应导致NHO中的外环CH2基团随后发生C（sp（2））-H活化。这一概念进一步扩展到烯丙基化NHO，从而产生膦取代烯丙基物种。

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《Dalton transactions: An international journal of inorganic chemistry》 |2021年第5期|共7页
作者
Gupta Priyanka; Siewert Jan-Erik; Wellnitz Tim; Fischer Malte; Baumann Wolgang; Beweries Torsten; Hering-Junghans Christian;
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Leibniz Inst Katalyse eV LIKAT Rostock Albert Einstein Str 29a D-18059 Rostock Germany;

Leibniz Inst Katalyse eV LIKAT Rostock Albert Einstein Str 29a D-18059 Rostock Germany;

Leibniz Inst Katalyse eV LIKAT Rostock Albert Einstein Str 29a D-18059 Rostock Germany;

Leibniz Inst Katalyse eV LIKAT Rostock Albert Einstein Str 29a D-18059 Rostock Germany;

Leibniz Inst Katalyse eV LIKAT Rostock Albert Einstein Str 29a D-18059 Rostock Germany;

Leibniz Inst Katalyse eV LIKAT Rostock Albert Einstein Str 29a D-18059 Rostock Germany;

Leibniz Inst Katalyse eV LIKAT Rostock Albert Einstein Str 29a D-18059 Rostock Germany;

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正文语种 eng
中图分类化学;无机化学;
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Reactivity of phospha-Wittig reagents towards NHCs and NHOs

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