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Leszczyński PJ, Jaroń T, Malinowski PJ, Gawraczyński J, Mazej Z, Grochala W. Polycyclic Aromatic Hydrocarbons and their Adducts with Solvents from Ag(II)SO 4-Based Oxidative C-C Coupling. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2019.1622134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | - T. Jaroń
- Center of New Technologies, University of Warsaw, Warsaw, Poland
| | - P. J. Malinowski
- Center of New Technologies, University of Warsaw, Warsaw, Poland
| | - J. Gawraczyński
- Center of New Technologies, University of Warsaw, Warsaw, Poland
- Faculty of Chemistry, University of Warsaw, Warsaw, Poland
| | - Z. Mazej
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Ljubljana, Slovenia
| | - W. Grochala
- Center of New Technologies, University of Warsaw, Warsaw, Poland
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2
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Sadanandan S, Gupta DK. Changing stereoselectivity and regioselectivity in copper( i)-catalyzed 5- exo cyclization by chelation and rigidity in aminoalkyl radicals: synthesis towards diverse bioactive N-heterocycles. NEW J CHEM 2020. [DOI: 10.1039/c9nj05166j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chelation, rigidity and carbon-radical positions in aminoalkyl precursors disturb the usual 2,4-trans diastereoselectivity and 5-exo mode in Cu(i)-catalyzed ATRC.
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Tittal RK, Ram RN, Nirwan A, Ghule VD, Kumar S. CuCl/bpy-promoted unusual Z-stereoselective synthesis of trichloroacetic acid phenyl ester for Hirshfeld surface analysis and DFT study. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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4
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Synthesis and molecular crystal of 3-Chloro-2-(1-chloro-1-methyl-ethyl)-2,3-dihydro-1H-naphtho[2,1-b]oxepin-4-one. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.11.125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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van der Meijden MW, Balandina T, Ivasenko O, De Feyter S, Wurst K, Kellogg RM. Synthesis, Properties, and Two-Dimensional Adsorption Characteristics of [6]Hexahelicene-7-carboxylic acid. Chemistry 2016; 22:14633-9. [PMID: 27554454 DOI: 10.1002/chem.201603058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Indexed: 11/07/2022]
Abstract
A convergent synthesis of racemic [6]hexahelicene-7-carboxylic acid by cross-coupling of a bicyclic and a tricyclic component is described. A metal-catalyzed ring-closure is also a fundamental component of the synthetic approach. Scanning tunneling microscopy (STM) measurements of the racemate self-assembled on Au(111) at liquid-solid interface revealed the formation of ordered racemic 2D crystals.
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Affiliation(s)
| | - Tatyana Balandina
- KU Leuven, Department of Chemistry, Division of Molecular Imaging and Photonics, Celestijnenlaan 200F, 3001, Heverlee, Belgium
| | - Oleksandr Ivasenko
- KU Leuven, Department of Chemistry, Division of Molecular Imaging and Photonics, Celestijnenlaan 200F, 3001, Heverlee, Belgium
| | - Steven De Feyter
- KU Leuven, Department of Chemistry, Division of Molecular Imaging and Photonics, Celestijnenlaan 200F, 3001, Heverlee, Belgium
| | - Klaus Wurst
- University of Innsbruck, Institute of General, Inorganic and Theoretical Chemistry, Innrain 80-82, 6020, Innsbruck, Austria
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6
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Ram RN, Gupta DK. Direct and Stereoselective Synthesis of Diversely Substituted 2,4-trans-(NH)-Pyrrolidines by Copper(I)-Catalyzed Radical Cyclization at Low Temperature. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600844] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ram N. Ram
- Department of Chemistry; Indian Institute of Technology Delhi, Hauz Khas; New Delhi - 110016 India
| | - Dharmendra Kumar Gupta
- Department of Chemistry; Indian Institute of Technology Delhi, Hauz Khas; New Delhi - 110016 India
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7
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A novel β-(oxy)alkyl radical during copper(I)-mediated stereoselective synthesis of (Z)-ene-1,4-diones in a reaction of 2,2,2-trichloro-1-phenylethanone. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.04.080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Tittal RK, Kumar S, Ram RN. Crystal structure of (Z)-2,3-di-chloro-1,4-bis-(4-meth-oxy-phen-yl)but-2-ene-1,4-dione. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o1049-50. [PMID: 25309219 PMCID: PMC4186131 DOI: 10.1107/s1600536814018790] [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: 07/04/2014] [Accepted: 08/19/2014] [Indexed: 11/26/2022]
Abstract
The title compound, C18H14Cl2O4, adopts a Z conformation around the cental C=C bond. The two aromatic rings of the mol-ecule are nearly perpendicular to each other, with a dihedral angle between of 86.22 (14)°. The meth-oxy substituents lie close to the plane of the attached benzene rings. The C(ar)-C(ar)-O-C(Me) torsion angles are -2.4 (7) and 7.5 (6)°. Weak C-H⋯O inter-actions link the mol-ecules forming a three-dimensional network. The crystal packing also displays short [3.160 (3) Å] Cl⋯O halogen-bonding contacts between mol-ecules related by the screw axis. The structure exhibits disorder of one carbonyl O atom with a refined occupancy ratio of 0.21 (6):0.79 (6).
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Affiliation(s)
- Ram K. Tittal
- Department of Chemistry, Indian Institute of Technology Delhi, Hauzkhas, New Delhi 110 016, India
| | - Satish Kumar
- Department of Chemistry, St Stephen’s College, University Enclave, Delhi 110 007, India
| | - R. N. Ram
- Department of Chemistry, Indian Institute of Technology Delhi, Hauzkhas, New Delhi 110 016, India
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Tittal RK, Kumar S, Ram RN. (Z)-2,3-Di-chloro-1,4-bis-(4-chloro-phen-yl)but-2-ene-1,4-dione. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o861-2. [PMID: 25249911 PMCID: PMC4158494 DOI: 10.1107/s1600536814015463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 07/02/2014] [Indexed: 11/10/2022]
Abstract
The title compound, C16H8Cl4O2, crystallizes with two independent mol-ecules in the asymmetric unit. Both mol-ecules have a Z conformation around the central double bond and they show significantly different C-C-C-O torsion angles between the aromatic ring and the carbonyl group [30.1 (7) and 3.9 (7)° in one molecule and 23.5 (7) and 9.3 (8)° in the other]. The crystal packing shows short halogen Cl⋯O [3.003 (5) and 3.246 (4) Å] and Cl⋯Cl [3.452 (2) Å] contacts and aromatic C-H⋯Cl and C-H⋯O inter-actions link the molecules, resulting in chains propogating along [100]. The crystal structure also features π-π stacking inter-actions between aromatic units of the two independent mol-ecules, with a centroid-centroid distance of 3.9264 (6) Å.
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Affiliation(s)
- Ram K. Tittal
- Department of Chemistry, Indian Institute of Technology Delhi, Hauzkhas, New Delhi 110 016, India
| | - Satish Kumar
- Department of Chemistry, St. Stephen’s College, University Enclave, Delhi 110 007, India
| | - R. N. Ram
- Department of Chemistry, Indian Institute of Technology Delhi, Hauzkhas, New Delhi 110 016, India
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Lan P, Jackson CJ, Banwell MG, Willis AC. Synthesis of a D-Ring Isomer of Galanthamine via a Radical-Based Smiles Rearrangement Reaction. J Org Chem 2014; 79:6759-64. [DOI: 10.1021/jo501255c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ping Lan
- Research
School of Chemistry,
Institute of Advanced Studies, The Australian National University, Canberra, ACT 0200, Australia
| | - Colin J. Jackson
- Research
School of Chemistry,
Institute of Advanced Studies, The Australian National University, Canberra, ACT 0200, Australia
| | - Martin G. Banwell
- Research
School of Chemistry,
Institute of Advanced Studies, The Australian National University, Canberra, ACT 0200, Australia
| | - Anthony C. Willis
- Research
School of Chemistry,
Institute of Advanced Studies, The Australian National University, Canberra, ACT 0200, Australia
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12
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Singh S, Saini D, Mehta S, Choquesillo-Lazarte D. Synthesis, spectroscopic, and thermal analyses of binuclear mixed ligand Co(II) and Ni(II) complexes. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.575133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Sukhjinder Singh
- a Department of Chemistry and Centre of Advanced Studies in Chemistry , Panjab University , Chandigarh 160014 , India
| | - Deepika Saini
- a Department of Chemistry and Centre of Advanced Studies in Chemistry , Panjab University , Chandigarh 160014 , India
| | - S.K. Mehta
- a Department of Chemistry and Centre of Advanced Studies in Chemistry , Panjab University , Chandigarh 160014 , India
| | - Duane Choquesillo-Lazarte
- b Laboratorio de Estudios Cristalograficos, IACT-CSIC, Edf. Inst. Lopez Neyra, P.T. Ciencias de la Salud , Avenida del Conociminento s/n, Armilla (Granada)-18100 , Spain
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Ram RN, Kumar N, Singh N. Synthesis of Chlorinated Bicyclic C-Fused Tetrahydrofuro[3,2-c]azetidin-2-ones. J Org Chem 2010; 75:7408-11. [DOI: 10.1021/jo101045z] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ram N. Ram
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Neeraj Kumar
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Nem Singh
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
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Fang X, Liu K, Li C. Efficient Regio- and Stereoselective Formation of Azocan-2-ones via 8-Endo Cyclization of α-Carbamoyl Radicals. J Am Chem Soc 2010; 132:2274-83. [DOI: 10.1021/ja9082649] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xinqiang Fang
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Kun Liu
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Chaozhong Li
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
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Ghelfi F, Roncaglia F, Pattarozzi M, Giangiordano V, Petrillo G, Sancassan F, Parsons AF. Atom transfer radical cyclization of O-allyl-2,2-dichlorohemiacetal acetates: an expedient method to dichloro-γ-lactones. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.10.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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