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Information × Registration Number 0223U000185, 0120U100150 , R & D reports Title Stable carbenes of heterocyclic and acyclic series. Synthesis and physico-chemical properties popup.stage_title Head Korotkikh Mykola I., Доктор хімічних наук Registration Date 05-01-2023 Organization Institute of Physical and Organic Chemistry and Coal Chemistry. LM Litvinenko of the National Academy of Sciences of Ukraine popup.description2  Object of study. A new type of carbene complexes – ylide-carbene complexes of metals (lithium and copper(I)), approaches to the synthesis of carbene complexes of transition metals. The obtained compounds are intended for the creation of highly effective catalysts of organic reactions and new biologically active compounds. The purpose of the work is to study the generation of new highly electron-donating stable carbenes, which include, in particular, ylide-carbenes, development of approaches to the synthesis of carbene complexes of transition metals. Research methods are synthetic, spectral (NMR spectroscopy), analytical (chromatographic, elemental analysis), computational (quantum chemical research). Results of study. By deprotonation of 1,3-dibenzylimidazolium salts with strong bases - potassium tert-butoxide and butyllithium - new types of carbene complexes - derivatives of ylide-carbenes and metals - lithium and copper(I) - were synthesized. It was established by the DFT method that the complexes have bicenter bonds of ylide and carbene centers with metal atoms. According to electronic indices and philicity, ylide-carbenes are superbasic and supernucleophilic reagents. Approaches to the synthesis of carbene complexes have been developed, the feature of which is the in situ process with the participation of sparingly soluble silver halides or the use of o-phenanthroline as a second ligand. Field of application – synthesis of stable carbenes and their carbenoid forms, catalysis of organic reactions. Product Description popup.authors Yenya Vasyl І. Gvozdetska Viktoriya O. Gordeyeva Irina O. Gresko Sergii V. Dziuba Oksana I. Doroshenko Tetyana F. Kompanets Mikhaylо О. Konovkina Olga A. Korotkikh Vladislav M. Litvinov Yuriy Ye. Nechitailov Maxim М. Popov Anatolii F. Rayenko Gennady F. Skorobogatova Zoya M. Ustilko Yuliya O. Shvaika Roksolana O. popup.nrat_date 2023-01-05 Close