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Cheng B, Li Y, Zhang X, Duan S, Li H, He Y, Li Y, Wang T, Zhai H. Two Reaction Modes of Pyridinium 1,4-Zwitterionic Thiolates with Sulfenes: Synthesis of 3H-1,2-Dithiole 2,2-Dioxides, 1,9a-Dihydropyrido[2,1-c][1,4]thiazines, and Indolizines. Org Lett 2020; 22:5817-5821. [DOI: 10.1021/acs.orglett.0c01888] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Bin Cheng
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yuntong Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xinping Zhang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Shengguo Duan
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Hui Li
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yixuan He
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yun Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Taimin Wang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Hongbin Zhai
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
- State Key Laboratory of Chemical Oncogenomics, Shenzhen Engineering Laboratory of Nano Drug Slow-Release, Peking University Shenzhen Graduate School, Shenzhen 518055, China
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Huang MQ, Li TJ, Liu JQ, Shatskiy A, Kärkäs MD, Wang XS. Switchable Copper-Catalyzed Approach to Benzodithiole, Benzothiaselenole, and Dibenzodithiocine Skeletons. Org Lett 2020; 22:3454-3459. [PMID: 32286077 PMCID: PMC7343286 DOI: 10.1021/acs.orglett.0c00907] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Indexed: 12/19/2022]
Abstract
A copper-catalyzed reaction between 2-bromo-benzothioamides and S8 or Se involving sulfur rearrangement is reported, enabling access to benzodithioles 2 and benzothiaselenoles 6 in the presence of Cs2CO3. In the absence of S8 or Se, the reaction affords dibenzodithiocines 7 via two consecutive C(sp2)-S Ullmann couplings.
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Affiliation(s)
- Meng-Qiao Huang
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthesis for Functional Materials, Jiangsu
Normal University, Xuzhou, Jiangsu 221116, China
| | - Tuan-Jie Li
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthesis for Functional Materials, Jiangsu
Normal University, Xuzhou, Jiangsu 221116, China
| | - Jian-Quan Liu
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthesis for Functional Materials, Jiangsu
Normal University, Xuzhou, Jiangsu 221116, China
- Department
of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Andrey Shatskiy
- Department
of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Markus D. Kärkäs
- Department
of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Xiang-Shan Wang
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthesis for Functional Materials, Jiangsu
Normal University, Xuzhou, Jiangsu 221116, China
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3
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Mikherdov AS, Kinzhalov MA, Novikov AS, Boyarskiy VP, Boyarskaya IA, Dar'in DV, Starova GL, Kukushkin VY. Difference in Energy between Two Distinct Types of Chalcogen Bonds Drives Regioisomerization of Binuclear (Diaminocarbene)Pd II Complexes. J Am Chem Soc 2016; 138:14129-14137. [PMID: 27700082 DOI: 10.1021/jacs.6b09133] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The reaction of cis-[PdCl2(CNXyl)2] (Xyl = 2,6-Me2C6H3) with various 1,3-thiazol- and 1,3,4-thiadiazol-2-amines in chloroform gives a mixture of two regioisomeric binuclear diaminocarbene complexes. For 1,3-thiazol-2-amines the isomeric ratio depends on the reaction conditions and kinetically (KRs) or thermodynamically (TRs) controlled regioisomers were obtained at room temperature and on heating, respectively. In CHCl3 solutions, the isomers are subject to reversible isomerization accompanied by the cleavage of Pd-N and C-N bonds in the carbene fragment XylNCN(R)Xyl. Results of DFT calculations followed by the topological analysis of the electron density distribution within the formalism of Bader's theory (AIM method) reveal that in CHCl3 solution the relative stability of the regioisomers (ΔGexp = 1.2 kcal/mol; ΔGcalcd = 3.2 kcal/mol) is determined by the energy difference between two types of the intramolecular chalcogen bonds, viz. S···Cl in KRs (2.8-3.0 kcal/mol) and S···N in TRs (4.6-5.3 kcal/mol). In the case of the 1,3,4-thiadiazol-2-amines, the regioisomers are formed in approximately equal amounts and, accordingly, the energy difference between these species is only 0.1 kcal/mol in terms of ΔGexp (ΔGcalcd = 2.1 kcal/mol). The regioisomers were characterized by elemental analyses (C, H, N), HRESI+-MS and FTIR, 1D (1H, 13C{1H}) and 2D (1H,1H-COSY, 1H,1H-NOESY, 1H,13C-HSQC, 1H,13C-HMBC) NMR spectroscopies, and structures of six complexes (three KRs and three TRs) were elucidated by single-crystal X-ray diffraction.
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Affiliation(s)
- Alexander S Mikherdov
- Saint Petersburg State University , 7/9 Universitetskaya Nab., Saint Petersburg, 199034, Russian Federation
| | - Mikhail A Kinzhalov
- Saint Petersburg State University , 7/9 Universitetskaya Nab., Saint Petersburg, 199034, Russian Federation
| | - Alexander S Novikov
- Saint Petersburg State University , 7/9 Universitetskaya Nab., Saint Petersburg, 199034, Russian Federation
| | - Vadim P Boyarskiy
- Saint Petersburg State University , 7/9 Universitetskaya Nab., Saint Petersburg, 199034, Russian Federation
| | - Irina A Boyarskaya
- Saint Petersburg State University , 7/9 Universitetskaya Nab., Saint Petersburg, 199034, Russian Federation
| | - Dmitry V Dar'in
- Saint Petersburg State University , 7/9 Universitetskaya Nab., Saint Petersburg, 199034, Russian Federation
| | - Galina L Starova
- Saint Petersburg State University , 7/9 Universitetskaya Nab., Saint Petersburg, 199034, Russian Federation
| | - Vadim Yu Kukushkin
- Saint Petersburg State University , 7/9 Universitetskaya Nab., Saint Petersburg, 199034, Russian Federation
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4
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Aebisher D, Brzostowska EM, Mahendran A, Greer A. Regioselective (biomimetic) synthesis of a pentasulfane from ortho-benzoquinone. J Org Chem 2007; 72:2951-5. [PMID: 17378613 DOI: 10.1021/jo062677w] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A mechanism is proposed for the formation of cyclic 5,6,7,8,9-pentathiabenzocycloheptene-1,2-diol, 4, from the reaction of o-benzoquinone with reduced elemental sulfur, H2Sx. 1,6-conjugate addition to the quinone is favored over 1,4-conjugate addition. Hydrogen bonding to the quinone oxygen enhances the nucleophilicity of H2Sx by facilitating the removal of the S-H proton. We propose that initially formed 3-polysulfidobenzene-diol intermediates are oxidized to their corresponding quinones and closure of the polysulfur ring subsequently takes place at the C3-C4 bond leading to 4. A possible mechanism for the formation of the pentasulfur linkage in 4 is discussed, which is the key moiety found in a number of natural products.
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Affiliation(s)
- David Aebisher
- Department of Chemistry, Graduate Center & The City University of New York (CUNY), Brooklyn College, Brooklyn, New York 11210, USA
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