Labile dioxy-functionalised zwitterionic imidazolinium salt: access to zwitterionic and neutral imidazolidin-2-ylidene derivatives and pi-acceptor properties of imidazolidine-2-selones

Gupta Vivek; Karthik Vedhagiri; Anantharaman Ganapathi

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Labile dioxy-functionalised zwitterionic imidazolinium salt: access to zwitterionic and neutral imidazolidin-2-ylidene derivatives and pi-acceptor properties of imidazolidine-2-selones

机译：不稳定的二氧化官能化两性离子咪唑啉盐：进入两性离子和中性咪唑酰胺-2-少茚衍生物和咪唑烷-2-选择剂的PI-Contentorys属性

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The dioxy-functionalised zwitterionic imidazolinium salt (3) is synthesised by the condensation of N,N'-dimesitylformamidine with glyoxal in the presence of ammonium tetrafluoroborate. The nucleophilicity of the carbene carbon is ascertained using the in situ generated anionic NHC from 3 with different electrophiles. Furthermore, 3 consists of a labile anionic five membered C2O2B at the backbone position of the imidazolinium unit, which can be tailored to prepare neutral NHC chalcogen compounds containing symmetrical and unsymmetrical oxy-functionalisation at the backbone. Furthermore, the pi-acceptor properties of NHCs were evaluated using Se-77 NMR in their respective imidazolidine-2-selones.

机译：二氧官能化的两性离子咪唑吡啶鎓盐（3）由N，N'-二贝基甲基脒的缩合合成，在四氟硼酸铵存在下与乙二醛合成。用不同的电子手理使用来自3的原位产生的阴离子NHC来确定卡宾碳的亲核性。此外，图3包括在咪唑啉单位的骨架位置处的不稳定阴离子五个元C2O2b，其可以定制以制备在骨架上含有对称性和非对称氧官能化的中性NHC硫属化合物。此外，使用SE-77 NMR在其各自的咪唑烷-2-选择子酮中评估NHC的PI-受体性质。

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来源
《RSC Advances》 |2015年第107期|共9页
作者
Gupta Vivek; Karthik Vedhagiri; Anantharaman Ganapathi;
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Indian Inst Technol Kanpur Dept Chem Kanpur 208016 Uttar Pradesh India;

Indian Inst Technol Kanpur Dept Chem Kanpur 208016 Uttar Pradesh India;

Indian Inst Technol Kanpur Dept Chem Kanpur 208016 Uttar Pradesh India;

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正文语种 eng
中图分类化学;
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1. Labile dioxy-functionalised zwitterionic imidazolinium salt: access to zwitterionic and neutral imidazolidin-2-ylidene derivatives and pi-acceptor properties of imidazolidine-2-selones [J] . Gupta Vivek, Karthik Vedhagiri, Anantharaman Ganapathi RSC Advances . 2015,第107期

机译：不稳定的二氧化官能化两性离子咪唑啉盐：进入两性离子和中性咪唑酰胺-2-少茚衍生物和咪唑烷-2-选择剂的PI-Contentorys属性
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Labile dioxy-functionalised zwitterionic imidazolinium salt: access to zwitterionic and neutral imidazolidin-2-ylidene derivatives and pi-acceptor properties of imidazolidine-2-selones

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