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Marchenko A, Koidan G, Hurieva A, Shvydenko K, Rozhenko AB, Rusanov EB, Kyrylchuk AA, Kostyuk A. Latent Nucleophilic Carbenes. J Org Chem 2021; 87:373-385. [PMID: 34898214 DOI: 10.1021/acs.joc.1c02397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Using DFT and ab initio calculations, we demonstrate that noncyclic formamidines can undergo thermal rearrangement into their isomeric aminocarbenes under rather mild conditions. We synthesized the silylformamidine, for which the lowest activation energy in this process was predicted. Experimental studies proved it to serve as a very reactive nucleophilic carbene. The reactions with acetylenes, benzenes, and trifluoromethane proceeded via insertion into sp, sp2, and sp3 CH bonds. The carbene also reacted with the functional groups, such as CHO, COR, and CN at double or triple bonds, displaying high mobility of the trimethylsilyl group. The obtained silylformamidine can be considered as a latent nucleophilic carbene. It can be prepared in bulk quantities, stored, and used when the need arises. Calculation results predict similar behavior for some other silylated formamidines and related compounds.
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Affiliation(s)
- Anatoliy Marchenko
- Department of Organophosphorus Chemistry, Institute of Organic Chemistry, Murmanska 5, Kyiv 02660, Ukraine
| | - Georgyi Koidan
- Department of Organophosphorus Chemistry, Institute of Organic Chemistry, Murmanska 5, Kyiv 02660, Ukraine
| | - Anastasiya Hurieva
- Department of Organophosphorus Chemistry, Institute of Organic Chemistry, Murmanska 5, Kyiv 02660, Ukraine
| | - Kostiantyn Shvydenko
- Department of Organophosphorus Chemistry, Institute of Organic Chemistry, Murmanska 5, Kyiv 02660, Ukraine
| | - Alexander B Rozhenko
- Igor Sikorsky Kyiv Polytechnic Institute, National Technical University of Ukraine, Prosp. Peremohy 37, Kyiv 03056, Ukraine.,Department of Physicochemical Investigations, Institute of Organic Chemistry, Murmanska 5, Kyiv 02660, Ukraine
| | - Eduard B Rusanov
- Department of Physicochemical Investigations, Institute of Organic Chemistry, Murmanska 5, Kyiv 02660, Ukraine
| | - Andrii A Kyrylchuk
- Department of Physicochemical Investigations, Institute of Organic Chemistry, Murmanska 5, Kyiv 02660, Ukraine
| | - Aleksandr Kostyuk
- Department of Organophosphorus Chemistry, Institute of Organic Chemistry, Murmanska 5, Kyiv 02660, Ukraine
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Marchenko A, Koidan G, Hurieva A, Dyakonenko VV, Shishkina SV, Rusanov EB, Kyrylchuk AA, Kostyuk A. Polydentate Phosphane Ligands Featuring
N
,
N
,
N’
‐Trialkylformamidines. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202001059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anatoliy Marchenko
- Department of Organophosphorus Chemistry Institute of Organic Chemistry Murmanska 5, Kyiv-94 02660 Ukraine
| | - Georgyi Koidan
- Department of Organophosphorus Chemistry Institute of Organic Chemistry Murmanska 5, Kyiv-94 02660 Ukraine
| | - Anastasiya Hurieva
- Department of Organophosphorus Chemistry Institute of Organic Chemistry Murmanska 5, Kyiv-94 02660 Ukraine
| | | | | | - Eduard B. Rusanov
- Department of Organophosphorus Chemistry Institute of Organic Chemistry Murmanska 5, Kyiv-94 02660 Ukraine
| | - Andrii A. Kyrylchuk
- Department of Organophosphorus Chemistry Institute of Organic Chemistry Murmanska 5, Kyiv-94 02660 Ukraine
| | - Aleksandr Kostyuk
- Department of Organophosphorus Chemistry Institute of Organic Chemistry Murmanska 5, Kyiv-94 02660 Ukraine
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Dichlorophosphoranides Stabilized by Formamidinium Substituents. HETEROATOM CHEMISTRY 2020. [DOI: 10.1155/2020/9856235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Dichlorophosphoranides featuring N,N-dimethyl-N′-arylformamidine substituents were isolated as individual compounds. Dichlorophosphoranide 9 was prepared by the multicomponent reaction of C-trimethylsilyl-N,N-dimethyl-N′-phenylformamidine and N,N-dimethyl-N′-phenylformamidine with phosphorus trichloride. Its molecular structure derived from a single-crystal X-ray diffraction was compared to the analogous dibromophosphoranide prepared previously by us by the reaction of phosphorus tribromide with N,N-dimethyl-N′-phenylformamidine. It was shown that a chlorophosphine featuring two N,N-dimethyl-N′-mesitylformamidine substituents reacted with hydrogen chloride to form dichlorophosphoranide 11. Its molecular structure was also determined by X-ray analysis and compared with that of closely related dichlorophosphoranide C.
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