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Poleschner H, Seppelt K. Attempts to Synthesize a Thiirane, Selenirane, and Thiirene by Dealkylation of Chalcogeniranium and Thiirenium Salts. Chemistry 2021; 27:649-659. [PMID: 32737908 PMCID: PMC7821244 DOI: 10.1002/chem.202003461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Indexed: 02/05/2023]
Abstract
Thiiranium salts [Ad2 SR]+ X- (5, 8, 9, 11, 12; X- =Tf2 N- (Tf=CF3 SO2 ), SbCl6 - ) and seleniranium salts [Ad2 SeR]+ X- (14, 16, 17, 23-25; X- =Tf2 N- , BF4 - , CHB11 Cl11 - , SbCl6 - ) are synthesized from strained alkene bis(adamantylidene) (1). The disulfides and the diselenides (Me3 SiCH2 CH2 E)2 (4, 13), (tBuMe2 SiCH2 CH2 E)2 (7, 22), and (NCCH2 CH2 E)2 (10, 15; E=S, Se) have been used. The thiirenium salts [tBu2 C2 SR]+ X- (34) and [Ad2 C2 SR]+ X- (35, 36) are prepared from the bis-tert-butylacetylene (2) and bis-adamantyl-acetylene (3) with R=Me3 SiCH2 CH2 and tBuMe2 SiCH2 CH2 . Attempts to cleave off the groups Me3 SiCH2 CH2 , tBuMe2 SiCH2 CH2 , and NCCH2 CH2 resulted in thiiranes 27, 30. No selenirane Ad2 Se (33) is formed from seleniranium salts, instead cleavage to the alkene (1) and diselenide (13, 15) occurs. The thiirenium salt [Ad2 C2 SCH2 CH2 SiMe3 ]+ Tf2 N- (35) does not yield the thiirene Ad2 C2 S (37), the three-membered ring is cleaved, forming the alkyne (3) and disulfide (4). All compounds are characterized by ESI mass spectra, NMR spectra, and by quantum chemical calculations. Crystal structures of the salts 8, 12, 25, 17, 26, 36 and the thiiranes 27, 30 are presented.
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Affiliation(s)
- Helmut Poleschner
- Institut für Chemie und Biochemie, Anorganische ChemieFreie Universität BerlinFabeckstr. 34–3614195BerlinGermany
| | - Konrad Seppelt
- Institut für Chemie und Biochemie, Anorganische ChemieFreie Universität BerlinFabeckstr. 34–3614195BerlinGermany
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Lee KLK, Martin-Drumel MA, Lattanzi V, McGuire BA, Caselli P, McCarthy MC. Gas phase detection and rotational spectroscopy of ethynethiol, HCCSH. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1552028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | - Marie-Aline Martin-Drumel
- Institut des Sciences Moléculaires d'Orsay, CNRS, Univ Paris Sud, Université Paris-Saclay, Orsay, France
| | - Valerio Lattanzi
- The Center for Astrochemical Studies, Max-Planck-Institut für extraterrestrische Physik, Garching, Germany
| | - Brett A. McGuire
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USA
- NAASC, National Radio Astronomy Observatory, Charlottesville, VA, USA
| | - Paola Caselli
- The Center for Astrochemical Studies, Max-Planck-Institut für extraterrestrische Physik, Garching, Germany
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3
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Liu XY, Fang YG, Xie BB, Fang WH, Cui G. QM/MM nonadiabatic dynamics simulations on photoinduced Wolff rearrangements of 1,2,3-thiadiazole. J Chem Phys 2018; 146:224302. [PMID: 29166059 DOI: 10.1063/1.4984589] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The photoinduced rearrangement reaction mechanism of 1,2,3-thiadiazole remains experimentally elusive. Two possible mechanisms have been proposed to date. The first is a stepwise mechanism via a thiocarbene intermediate; the second is an excited-state concerted rearrangement mechanism. Herein we have adopted both the electronic structure calculations and nonadiabatic dynamics simulations to study the photoinduced rearrangement reactions of 1,2,3-thiadiazole in the S2, S1, and S0 states in solution. On the basis of QM(CASPT2)/MM [quantum mechanics(complete active space self-consistent field second-order perturbation theory)/molecular mechanics] calculations, we have found that (1) the thiocarbene intermediate is not stable; thus, the stepwise mechanism should be unfavorable; (2) the excited-state decay from the S2 via S1 to S0 state is ultrafast and completed within ca. 200 fs; therefore, both the S2 and S1 states should not have a long enough time for the excited-state rearrangements. Instead, we have computationally proposed a modified photoinduced rearrangement mechanism. Upon irradiation, the S2 state is first populated (114.0 kcal/mol), followed by an ultrafast S2 → S1 → S0 excited-state decay along the S-N bond fission, which eventually leads to a very "hot" intermediate with the S-N bond broken (18.3 kcal/mol). Then, thermal rearrangements to thioketene, thiirene, and ethynethiol occur in a concerted asynchronous way. This mechanistic scenario has been verified by full-dimensional trajectory-based nonadiabatic dynamics simulations at the QM(CASPT2)/MM level. Finally, our present computational work provides experimentally interesting mechanistic insights into the photoinduced rearrangement reactions of cyclic and acyclic diazo compounds.
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Affiliation(s)
- Xiang-Yang Liu
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Ye-Guang Fang
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Bin-Bin Xie
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Wei-Hai Fang
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Ganglong Cui
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
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Zhou X, Wu J, Hao Y, Zhu C, Zhuo Q, Xia H, Zhu J. Rational Design and Synthesis of Unsaturated Se-Containing Osmacycles with σ-Aromaticity. Chemistry 2017; 24:2389-2395. [DOI: 10.1002/chem.201703870] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaoxi Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials ( i ChEM), and Department of Chemistry, College of Chemistry, and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
| | - Jingjing Wu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials ( i ChEM), and Department of Chemistry, College of Chemistry, and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
- Fujian Provincial Key Laboratory of Theoretical, and Computational Chemistry; Xiamen University; Xiamen 361005 P.R. China
| | - Yulei Hao
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials ( i ChEM), and Department of Chemistry, College of Chemistry, and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
- Fujian Provincial Key Laboratory of Theoretical, and Computational Chemistry; Xiamen University; Xiamen 361005 P.R. China
| | - Congqing Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials ( i ChEM), and Department of Chemistry, College of Chemistry, and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
| | - Qingde Zhuo
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials ( i ChEM), and Department of Chemistry, College of Chemistry, and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
| | - Haiping Xia
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials ( i ChEM), and Department of Chemistry, College of Chemistry, and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
| | - Jun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials ( i ChEM), and Department of Chemistry, College of Chemistry, and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
- Fujian Provincial Key Laboratory of Theoretical, and Computational Chemistry; Xiamen University; Xiamen 361005 P.R. China
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Filimonov VO, Dianova LN, Galata KA, Beryozkina TV, Novikov MS, Berseneva VS, Eltsov OS, Lebedev AT, Slepukhin PA, Bakulev VA. Switchable Synthesis of 4,5-Functionalized 1,2,3-Thiadiazoles and 1,2,3-Triazoles from 2-Cyanothioacetamides under Diazo Group Transfer Conditions. J Org Chem 2017; 82:4056-4071. [PMID: 28328204 DOI: 10.1021/acs.joc.6b02736] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
High yield solvent-base-controlled, transition metal-free synthesis of 4,5-functionalized 1,2,3-thiadiazoles and 1,2,3-triazoles from 2-cyanothioacetamides and sulfonyl azides is described. Under diazo transfer conditions in the presence of a base in an aprotic solvent 2-cyanothioacetamides operating as C-C-S building blocks produce 5-amino-4-cyano-1,2,3-thiadiazoles exclusively. The use of alkoxide/alcohol system completely switches the reaction course due to the change of one of the reaction centers in the 2-cyanothioacetamide (C-C-N building block) resulting in the formation of 5-sulfonamido-1,2,3-triazole-4-carbothioamide sodium salts as the only products. The latter serve as good precursors for 5-amino-1,2,3-thiadiazole-4-carboximidamides, the products of Cornforth-type rearrangement occurring in neutral protic medium or under acid conditions. According to DFT calculations (B3LYP/6-311+G(d,p)) the rearrangement proceeds via intermediate formation of a diazo compound, and can be catalyzed by acids via the protonation of oxygen atom of the sulfonamide group.
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Affiliation(s)
- Valeriy O Filimonov
- Ural Federal University named after the first President of Russia B. N. Yeltsin , 19 Mira st., Yekaterinburg 620002, Russia
| | - Lidia N Dianova
- Ural Federal University named after the first President of Russia B. N. Yeltsin , 19 Mira st., Yekaterinburg 620002, Russia
| | - Kristina A Galata
- Ural Federal University named after the first President of Russia B. N. Yeltsin , 19 Mira st., Yekaterinburg 620002, Russia
| | - Tetyana V Beryozkina
- Ural Federal University named after the first President of Russia B. N. Yeltsin , 19 Mira st., Yekaterinburg 620002, Russia
| | - Mikhail S Novikov
- Institute of Chemistry, St. Petersburg State University , 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | - Vera S Berseneva
- Ural Federal University named after the first President of Russia B. N. Yeltsin , 19 Mira st., Yekaterinburg 620002, Russia
| | - Oleg S Eltsov
- Ural Federal University named after the first President of Russia B. N. Yeltsin , 19 Mira st., Yekaterinburg 620002, Russia
| | - Albert T Lebedev
- Department of Chemistry, Lomonosov Moscow State University , Moscow 119991, Russia
| | - Pavel A Slepukhin
- Ural Federal University named after the first President of Russia B. N. Yeltsin , 19 Mira st., Yekaterinburg 620002, Russia.,I. Ya. Postovsky Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences , 20 S. Kovalevskaya st., Yekaterinburg 620990, Russia
| | - Vasiliy A Bakulev
- Ural Federal University named after the first President of Russia B. N. Yeltsin , 19 Mira st., Yekaterinburg 620002, Russia
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