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Li HY, Niu X, Zhang SS, Shen S, Meng QY, Yang XL. Intramolecular Dehydrogenative Photocyclization of N-Phenyl-1-naphthamides. Org Lett 2024; 26:5364-5369. [PMID: 38874571 DOI: 10.1021/acs.orglett.4c01805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Here, we explore a dehydrogenative 6π photocyclization method for N-substituted naphthalene carboxamides, which can be conducted in air. This method employs DMSO as both the reaction solvent and oxidant while also stabilizing the excited state of the substrate. Furthermore, the addition of photosensitizer enables the reaction to proceed under a 440-445 nm LED source via energy transfer. The proposed mechanism is initially validated through DFT calculations.
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Affiliation(s)
- Hao-Yuan Li
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Chemical Biology of Hebei Province (22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
| | - Xiaoying Niu
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Chemical Biology of Hebei Province (22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
| | - Shan-Shan Zhang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Chemical Biology of Hebei Province (22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
| | - Shigang Shen
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Chemical Biology of Hebei Province (22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
| | - Qing-Yuan Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xiu-Long Yang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Chemical Biology of Hebei Province (22567635H), College of Chemistry and Materials Science, Hebei University, Baoding 071002, P. R. China
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Liu X, Wang L, Feng Y, Cui D, Liu Z. Crystal structure of 8-hexyloxy-2-[( Z)-2-(naphthalen-2-yl)ethenyl]quinoline. Acta Crystallogr E Crystallogr Commun 2022; 78:770-773. [PMID: 35974831 PMCID: PMC9361378 DOI: 10.1107/s2056989022006740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 06/30/2022] [Indexed: 11/10/2022]
Abstract
In the title molecule, C27H27NO, the naphthalene and quinoline groups are both planar and subtend a dihedral angle of 15.47 (7)°. They are nearly coplanar with the cis-vinyl bridge and the hexyloxy chain, which adopts an all-trans conformation, resulting in transannular bifurcated intramolecular C—H⋯N,O contact. The crystal structure features γ-packing of the aromatic moieties, while the parallel packing of alkyl chains resembles that of alkanes. In the title molecule, C27H27NO, the naphthalene and quinoline groups are both planar and subtend a dihedral angle of 15.47 (7)°. They are nearly coplanar with the cis-vinyl bridge and the hexyloxy chain, which adopts an all-trans conformation, resulting in transannular bifurcated intramolecular C—H⋯N,O contact. The crystal structure features γ-packing of the aromatic moieties, while the parallel packing of alkyl chains resembles that of alkanes.
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Synthesis and resolution of 2-amino-5-aza[6]helicene. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Amin S, Alam MM, Akhter M, Najmi AK, Siddiqui N, Husain A, Shaquiquzzaman M. A review on synthetic procedures and applications of phosphorus oxychloride (POCl 3) in the last biennial period (2018–19). PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2020.1831499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shaista Amin
- Drug Design & Medicinal Chemistry Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - M. Mumtaz Alam
- Drug Design & Medicinal Chemistry Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Mymoona Akhter
- Drug Design & Medicinal Chemistry Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - A. K. Najmi
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Nadeem Siddiqui
- Drug Design & Medicinal Chemistry Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Asif Husain
- Drug Design & Medicinal Chemistry Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - M. Shaquiquzzaman
- Drug Design & Medicinal Chemistry Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
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Tonkoglazova DI, Gulevskaya AV, Chistyakov KA, Askalepova OI. Synthesis, crystal structures and properties of carbazole-based [6]helicenes fused with an azine ring. Beilstein J Org Chem 2021; 17:11-21. [PMID: 33488827 PMCID: PMC7801798 DOI: 10.3762/bjoc.17.2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/07/2020] [Indexed: 01/22/2023] Open
Abstract
Novel carbazole-based [6]helicenes fused with an azine ring (pyridine, pyrazine or quinoxaline) have been prepared through a five-step synthetic sequence in good overall yields. Commercially available 2,3-dihaloazines were used as starting materials. To discern the effect of merging an azine moiety within a helical skeleton, the X-ray structures, UV–vis absorption and fluorescence spectra of the helicenes were investigated and compared to that of the parent carbazole-based [6]helicene (7H-phenanthro[3,4-c]carbazole).
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Affiliation(s)
- Daria I Tonkoglazova
- Department of Chemistry, Southern Federal University, Zorge str., 7, Rostov-on-Don 344090, Russian Federation
| | - Anna V Gulevskaya
- Department of Chemistry, Southern Federal University, Zorge str., 7, Rostov-on-Don 344090, Russian Federation
| | - Konstantin A Chistyakov
- I. Ya. Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskaya Str., 22, Yekaterinburg 620219, Russian Federation
| | - Olga I Askalepova
- Department of Chemistry, Southern Federal University, Zorge str., 7, Rostov-on-Don 344090, Russian Federation
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Zhang D, Shi L, Liu Z, Li L, Hu Z, Cui D, Yang J. Crystal structure of 5,15-dihexyl-5,15-di-hydro-benzo[2,1- b:4,3- c']dicarbazole hexane 0.375-solvate. Acta Crystallogr E Crystallogr Commun 2018; 74:1605-1608. [PMID: 30443390 PMCID: PMC6218895 DOI: 10.1107/s2056989018014512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 10/15/2018] [Indexed: 11/22/2022]
Abstract
The title compound, C38H40N2·0.375C6H14, crystallizes in the monoclinic space group P21/c and has a host-guest structure with the helicene molecules forming a porous structure and mol-ecules of hexane inserted into the holes. The dihedral angles between the two carbazole sections of the right- and left-handed helicenes are 27.44 (3) and 25.63 (3)°, respectively. There are no classical π-π inter-actions or hydrogen-bonding inter-actions present between adjacent mol-ecules in the crystal structure. The hexane solvent mol-ecule shows positional disorder.
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Affiliation(s)
- Dingchao Zhang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong Province, People’s Republic of China
| | - Longqiang Shi
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong Province, People’s Republic of China
| | - Zhi Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong Province, People’s Republic of China
| | - Li Li
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong Province, People’s Republic of China
| | - Zhenhao Hu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong Province, People’s Republic of China
| | - Deliang Cui
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong Province, People’s Republic of China
| | - Jing Yang
- School of Chemistry and Environmental Engineering, Shandong University of Science and Technology, Qingdao, People’s Republic of China
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