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Kong D, Li J, Dai W, Jiang L, Zhao Y, Zhu H, Fu G, Roesky HW. Geometrically Compelled Silicon(II)/Silicon(IV) Donor-Acceptor Interaction Enables the Enamination of Nitriles. Angew Chem Int Ed Engl 2023; 62:e202315249. [PMID: 37877345 DOI: 10.1002/anie.202315249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 10/24/2023] [Accepted: 10/24/2023] [Indexed: 10/26/2023]
Abstract
Discovering new bonding scenarios and subsequently exploring the reactivity contribute substantially to advance the main group element chemistry. Herein, we report on the isolation and characterization of an intriguing class of the hydrido-benzosiloles 2-4. These compounds exhibit a side arm of the amidinatosilylenyl group, featuring unidirectional silicon(II)/silicon(IV) donor-acceptor interaction on account of the geometric constraint. Furthermore, the reactions involving 2-4 with nitriles yield the tricyclic compounds that edge-fused of the Si-heteroimidazolidine-CN2 Si2 , silole-C4 Si, and phenyl-C6 -rings (5-13). These compounds are manifesting a unique reaction that the silicon(II)/silicon(IV) interaction enables the enamination of the α-H-bearing nitriles. The reaction mechanism involved in H-shift under oxidative addition at silylene followed by hydrosilylation of a ketenimine intermediate was revealed by density function theory (DFT) calculations.
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Affiliation(s)
- Deliang Kong
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China
| | - Jiancheng Li
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China
| | - Wen Dai
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China
| | - Liuying Jiang
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China
| | - Yiling Zhao
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China
| | - Hongping Zhu
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China
| | - Gang Fu
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China
| | - Herbert W Roesky
- Institüt für Anorganische Chemie, Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany
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Klyukin IN, Vlasova YS, Novikov AS, Zhdanov AP, Hagemann HR, Zhizhin KY, Kuznetsov NT. B-F bonding and reactivity analysis of mono- and perfluoro-substituted derivatives of closo-borate anions (6, 10, 12): A computational study. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115559] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Nelyubin AV, Selivanov NA, Bykov AY, Klyukin IN, Novikov AS, Zhdanov AP, Karpechenko NY, Grigoriev MS, Zhizhin KY, Kuznetsov NT. Primary Amine Nucleophilic Addition to Nitrilium Closo-Dodecaborate [B 12H 11NCCH 3] -: A Simple and Effective Route to the New BNCT Drug Design. Int J Mol Sci 2021; 22:ijms222413391. [PMID: 34948186 PMCID: PMC8707455 DOI: 10.3390/ijms222413391] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/07/2021] [Accepted: 12/10/2021] [Indexed: 11/16/2022] Open
Abstract
In the present work, a convenient and straightforward approach to the preparation of borylated amidines based on the closo-dodecaborate anion [B12H11NCCH3NHR]-, R=H, Alk, Ar was developed. This method has two stages. A nitrile derivative of the general form [B12H11NCCH3]- was obtained, using a modified technique, in the first stage. On the second stage the resulting molecular system interacted with primary amines to form the target amidine products. This approach is characterised by a simple chemical apparatus, mild conditions and high yields of the final products. The mechanism of the addition of amine to the nitrile derivative of the closo-dodecaborate anion was studied, using quantum-chemical methods. The interaction between NH3 and [B12H11NCCH3]- ammonia was chosen as an example. It was found that the structure of the transition state determines the stereo-selectivity of the process. A study of the biological properties of borylated amidine sodium salts indicated that the substances had low toxicity and could accumulate in cancer cells in significant amounts.
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Affiliation(s)
- Alexey V. Nelyubin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
| | - Nikita A. Selivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
| | - Alexander Yu. Bykov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
| | - Ilya N. Klyukin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
| | - Alexander S. Novikov
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7-9, 199034 Saint Petersburg, Russia;
| | - Andrey P. Zhdanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
- Correspondence: ; Tel.: +7-926-727-0139
| | - Natalia Yu. Karpechenko
- N. N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoye Shosse, 115478 Moscow, Russia;
- Depatment of Medicinal Chemistry and Toxicology, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Mikhail S. Grigoriev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Bldg 4, 119071 Moscow, Russia;
| | - Konstantin Yu. Zhizhin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
| | - Nikolay T. Kuznetsov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia; (A.V.N.); (N.A.S.); (A.Y.B.); (I.N.K.); (K.Y.Z.); (N.T.K.)
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