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Zhou Y, Ma R, Li X, Liu X, Wang KH, Wang J, Huang D, Hu Y. Tandem Addition/Cyclization/Halogenation Reaction of Difluoromethylated N-Acylhydrazones with Allyltrimethylsilanes. J Org Chem 2023. [PMID: 38057279 DOI: 10.1021/acs.joc.3c02174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
As novel difluoromethyl building blocks, difluoromethylated N-acylhydrazones react with allyltrimethylsilanes and the halogen source via a tandem addition/cyclization/halogenation strategy, which produces various difluoromethylpyrazoline compounds in good yields. The method features mild reaction conditions, broad substrate scopes, and a transition metal-free process with easy operation. It also proves that difluoromethylated N-acylhydrazones are useful difluoromethyl building blocks for the construction of difluoromethylated nitrogen heterocycles.
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Affiliation(s)
- Yuxiu Zhou
- College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Ransong Ma
- College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Xiaoyong Li
- College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Xiaokang Liu
- College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Junjiao Wang
- College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, P. R. China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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Abdi A, Hosseini SS, Nikbakht A, Bijanzadeh HR, Rominger F, Balalaie S. Regioselective Hydrothiolation of Allenoates through a Ca(OTf)
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‐Promoted Three‐Component Reaction. ChemistrySelect 2022. [DOI: 10.1002/slct.202203372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Aida Abdi
- Peptide Chemistry Research Institute K. N. Toosi University of Technology P. O. Box 15875-4416 Tehran Iran
| | - S. Sina Hosseini
- Peptide Chemistry Research Institute K. N. Toosi University of Technology P. O. Box 15875-4416 Tehran Iran
| | - Ali Nikbakht
- Peptide Chemistry Research Institute K. N. Toosi University of Technology P. O. Box 15875-4416 Tehran Iran
| | - Hamid Reza Bijanzadeh
- Department of Environmental Sciences Faculty of Natural Resources and Marine Sciences Tarbiat Modares University Noor Iran
| | - Frank Rominger
- Organisch-Chemisches Institut der Universität Heidelberg Im Neuenheimer Feld 271 69120 Heidelberg Germany
| | - Saeed Balalaie
- Peptide Chemistry Research Institute K. N. Toosi University of Technology P. O. Box 15875-4416 Tehran Iran
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3
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Hajinasiri R. Allenoates in organic synthesis. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Lu F, Chen Y, Song X, Yu C, Li T, Zhang K, Yao C. NHC-Catalyzed [2 + 4] Annulation of Alkynyl Ester with Chalcone. J Org Chem 2022; 87:6902-6909. [PMID: 35486449 DOI: 10.1021/acs.joc.2c00022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An NHC-catalyzed [2 + 4] cyclization of alkynyl ester with α,β-unsaturated ketone to form a pyran scaffold was developed successfully. The cheap and easily available starting materials, mild reaction conditions, moderate to excellent yields, and high atom economy make this strategy attractive for the syntheses of highly substituted 4H-pyran derivatives.
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Affiliation(s)
- Fangfang Lu
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Yangxu Chen
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Xue Song
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Chenxia Yu
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Tuanjie Li
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Kai Zhang
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Changsheng Yao
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
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Zhang J, Qiao Q, Wu Z, Pang Z, Shi Q, Qiao Y, Wang Y, wei D. Mechanism and origin of selectivities for NHC-catalyzed synthesis of axially chiral benzothiophene/benzofuran-fused biaryls. Org Biomol Chem 2022; 20:1662-1670. [DOI: 10.1039/d1ob02429a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By performing density functional theory (DFT) calculations, we investigated and identified the fundamental pathway for N-heterocyclic carbene (NHC)-catalyzed synthesis of axially chiral benzothiophene-fused biaryl using enal and 2-benzyl-benzothiophene-3-carbaldehyde, which includes...
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7
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Yang TT, Zhang M, Zhang QY, Wang C, Chen LH, Wei D. Transformation of 1,1′-biphosphirane-M(CO)5 (M = Mo, Cr, W) complexes: Possible mechanisms and reactivity of active intermediates. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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