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Mattison A, Brown JM, Carmichael D, Alcock NW. Are stable atropisomers possible for meta-meta’ linked biphenols. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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2
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Murai T, Miwa T. Kinetic Resolution of Secondary 2-Aryl-1-cycloalkanols with Phosphoroselenoyl Chloride with a Binaphthyl Group. HETEROATOM CHEMISTRY 2014. [DOI: 10.1002/hc.21168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Toshiaki Murai
- Department of Chemistry and Biomolecular Science; Faculty of Engineering, Gifu University; Yanagido Gifu 501-1193 Japan
- JST, 4-1-8, Honcho; Kawaguchi Saitama 332-0012 Japan
| | - Tomoaki Miwa
- Department of Chemistry and Biomolecular Science; Faculty of Engineering, Gifu University; Yanagido Gifu 501-1193 Japan
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Dubey R, Tewari AK, Singh VP, Singh P, Dangi JS, Puerta C, Valerga P, Kant R. Molecular docking study of conformational polymorph: building block of crystal chemistry. ScientificWorldJournal 2013; 2013:309710. [PMID: 24250264 PMCID: PMC3821945 DOI: 10.1155/2013/309710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Accepted: 09/15/2013] [Indexed: 11/17/2022] Open
Abstract
Two conformational polymorphs of novel 2-[2-(3-cyano-4,6-dimethyl-2-oxo-2H-pyridin-1-yl)-ethoxy]-4,6-dimethyl nicotinonitrile have been developed. The crystal structure of both polymorphs (1a and 1b) seems to be stabilized by weak interactions. A difference was observed in the packing of both polymorphs. Polymorph 1b has a better binding affinity with the cyclooxygenase (COX-2) receptor than the standard (Nimesulide).
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Affiliation(s)
- Rashmi Dubey
- Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
- Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalya (A Central University), Bilaspur, Chhattisgarh 495009, India
| | - Ashish Kumar Tewari
- Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Ved Prakash Singh
- Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Praveen Singh
- Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Jawahar Singh Dangi
- Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalya (A Central University), Bilaspur, Chhattisgarh 495009, India
| | - Carmen Puerta
- Departamento de Ciencia de los Materiales e Ingenieria Metalurgica, Facultad de Ciencias, Campus Universitario del Rio San Pedro, 11510 Puerto Real, Spain
| | - Pedro Valerga
- Departamento de Ciencia de los Materiales e Ingenieria Metalurgica, Facultad de Ciencias, Campus Universitario del Rio San Pedro, 11510 Puerto Real, Spain
| | - Rajni Kant
- Department of Physics, Jammu University, Jammu 180016, India
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Shamoto K, Miyazaki A, Matsukura M, Kobayashi Y, Shioiri T, Matsugi M. A Nonenzymatic Kinetic Resolution of (±)- trans-2-Arylcyclohexanols via Esterification Using Polymer-Supported DCC, DMAP, and 3 β-Acetoxyetienic Acid. SYNTHETIC COMMUN 2013. [DOI: 10.1080/00397911.2011.636498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Kengo Shamoto
- a Faculty of Agriculture , Meijo University , Nagoya , Japan
| | | | - Mika Matsukura
- a Faculty of Agriculture , Meijo University , Nagoya , Japan
| | - Yuki Kobayashi
- a Faculty of Agriculture , Meijo University , Nagoya , Japan
| | | | - Masato Matsugi
- a Faculty of Agriculture , Meijo University , Nagoya , Japan
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Kawamorita S, Murakami R, Iwai T, Sawamura M. Synthesis of Primary and Secondary Alkylboronates through Site-Selective C(sp3)–H Activation with Silica-Supported Monophosphine–Ir Catalysts. J Am Chem Soc 2013; 135:2947-50. [DOI: 10.1021/ja3126239] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Soichiro Kawamorita
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Ryo Murakami
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Tomohiro Iwai
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Masaya Sawamura
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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Tewari AK, Singh VP, Dubey R, Puerta C, Valerga P, Verma R. Importance of weak interactions in developing 1,3-bis(4,6-dimethyl-1H-nicotinonitrile-1-yl)1,3-dioxy propane polymorphs. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 79:1267-1275. [PMID: 21664173 DOI: 10.1016/j.saa.2011.04.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2011] [Revised: 04/01/2011] [Accepted: 04/22/2011] [Indexed: 05/30/2023]
Abstract
The structure of 1,3-bis(4,6-dimethyl-1H-nicotinonitrile-1-yl)1,3-dioxy propane polymorphs has been characterized by X-ray diffraction, FT-IR, 1H and 13C NMR spectroscopies. The influence of intra and intermolecular weak interactions is thoroughly studied in solid state using single crystal X-ray diffraction and FT-IR. These polymorphs belong to monoclinic space group 'P2(1/n)' and 'P2(1/c)'. These polymorphs have C-H⋯n (lone pair), hydrogen bonds, C-N⋯π, C-H⋯π and π⋯π intermolecular non-covalent interactions. These polymorphs are the result of weak interactions and solvent used in crystallization. The FT-IR spectra have been recorded in the solid phase and NMR has been recorded in solvent. The optimized geometry has been calculated by B3LYP methods using different basis sets. The FT-IR and NMR spectra of 1st polymorphs has been calculated at B3LYP/6-31G (d) level. The scaled theoretical wave number showed good agreement with the experimental values. These two polymorphs as well as other stereomers are studied by DFT calculations.
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Affiliation(s)
- Ashish Kumar Tewari
- Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi 221 005, India.
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Shen YH, Lv HC, Zhao L. Synthesis of Chiral P,N-ligands derived from Quinoline and their Application in Asymmetric Allylic Alkylations. JOURNAL OF CHEMICAL RESEARCH 2011. [DOI: 10.3184/174751911x13082269792294] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chiral P,N-ligands derived from quinoline and with a trans and cis cyclohexane backbone were easily synthesised in four steps from quinoline N-oxide. The enantiopure trans isomer was obtained by the way of chiral resolution of the mixture of trans- and cis-2-(quinolin-2-yl)cyclohexanol with dibenzoyltartaric acid and then subjected to a Mitsunobu reaction and deprotection to give the corresponding cis isomer. The optical pure trans and cis isomer reacted with chlorodiphenylphosphine or PAr2NEt2 to obtain trans and cis P,N-ligands, which were used in asymmetric allylic alkylations with up to 78% ee and 84% ee respectively.
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Affiliation(s)
- Yan-Hong Shen
- Department of Chemistry, Anyang Institute of Technology, Anyang 455000, P. R. China
| | - Hui-Chao Lv
- Department of Chemistry, Anyang Institute of Technology, Anyang 455000, P. R. China
| | - Liang Zhao
- Department of Chemistry, Anyang Institute of Technology, Anyang 455000, P. R. China
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Wenzel TJ, Chisholm CD. Assignment of absolute configuration using chiral reagents and NMR spectroscopy. Chirality 2010; 23:190-214. [DOI: 10.1002/chir.20889] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Accepted: 05/18/2010] [Indexed: 11/11/2022]
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Dieng PS, Sirlin C, Pfeffer M. Enantioselective recognition of chiral carboxylic anions by a ruthenacyclic receptor. NEW J CHEM 2010. [DOI: 10.1039/b9nj00738e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Liu QB, Zhou YG. Synthesis of chiral cyclohexane-backbone P,N-ligands derived from pyridine and their applications in asymmetric catalysis. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.01.123] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Khrustalev VN, Krasnov KA. Weak interactions in 1,3-dimethyl-5-arylmethyl-5-cytisylmethylbarbituric acids. Unusually steady intramolecular organic “sandwich” complexes. J Mol Struct 2007. [DOI: 10.1016/j.molstruc.2006.05.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Matsugi M, Itoh K, Nojima M, Hagimoto Y, Kita Y. A novel separation technique of diastereomeric esters of pyridylethanols by extraction: formal total synthesis of PNU-142721, HIV-1 reverse transcriptase inhibitor. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.01.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Matsugi M, Itoh K, Nojima M, Hagimoto Y, Kita Y. Optical resolution of (±)-1-furo[2,3-c]pyridin-5-yl-ethanol using extraction technique: formal total synthesis of PNU-142721, HIV-1 reverse transcriptase inhibitor. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00612-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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