51
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Preetam A, Nath M. An eco-friendly Pictet–Spengler approach to pyrrolo- and indolo[1,2-a]quinoxalines using p-dodecylbenzenesulfonic acid as an efficient Brønsted acid catalyst. RSC Adv 2015. [DOI: 10.1039/c4ra16651e] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Environmentally benign synthesis of pyrrolo- and indolo[1,2-a]quinoxalines has been achieved at 25 °C by usingp-dodecylbenzenesulfonic acid as a Brønsted acid catalyst.
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Affiliation(s)
| | - Mahendra Nath
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
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52
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Chernyshev VM, Vlasova AG, Astakhov AV, Shishkina SV, Shishkin OV. Reactivity of C-Amino-1,2,4-triazoles toward Electrophiles: A Combined Computational and Experimental Study of Alkylation by Halogen Alkanes. J Org Chem 2014; 80:375-85. [DOI: 10.1021/jo502405q] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Victor M. Chernyshev
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, 346428 Novocherkassk, Russian Federation
| | - Anna G. Vlasova
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, 346428 Novocherkassk, Russian Federation
| | - Alexander V. Astakhov
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, 346428 Novocherkassk, Russian Federation
| | - Svitlana V. Shishkina
- State Scientific Institution “Institute for Single Crystals” of National Academy of Sciences of Ukraine, Lenin Ave. 60, 61001 Kharkiv, Ukraine
| | - Oleg V. Shishkin
- State Scientific Institution “Institute for Single Crystals” of National Academy of Sciences of Ukraine, Lenin Ave. 60, 61001 Kharkiv, Ukraine
- V. N. Karazin Kharkiv National University, 4 Svobody sq., Kharkiv 61202, Ukraine
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53
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Pragyan P, Kesharwani SS, Nandekar PP, Rathod V, Sangamwar AT. Predicting drug metabolism by CYP1A1, CYP1A2, and CYP1B1: insights from MetaSite, molecular docking and quantum chemical calculations. Mol Divers 2014; 18:865-78. [DOI: 10.1007/s11030-014-9534-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 06/19/2014] [Indexed: 12/13/2022]
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54
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Hosseinzadeh B, Chermahini AN, Beni AS, Teimouri A. Theoretical studies on the reactivity of thiazole derivatives. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1258-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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55
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Pratihar S. Electrophilicity and nucleophilicity of commonly used aldehydes. Org Biomol Chem 2014; 12:5781-8. [DOI: 10.1039/c4ob00555d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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56
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Kozielewicz P, Tzeli D, Tsoungas PG, Zloh M. Arene-fused 1,2-oxazole N-oxides and derivatives. The impact of the N–O dipole and substitution on their aromatic character and reactivity profile. Can it be a useful structure in synthesis? A theoretical insight. Struct Chem 2014. [DOI: 10.1007/s11224-014-0459-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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57
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β-Nitroso-o-quinone methides: potent intermediates in organic chemistry and biology. The impact of the NO group on their structure and reactivity profile: a theoretical insight. Struct Chem 2014. [DOI: 10.1007/s11224-014-0454-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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58
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Bhatia S, Bharatam PV. Possibility of the Existence of Donor–Acceptor Interactions in Bis(azole)amines: An Electronic Structure Analysis. J Org Chem 2014; 79:4852-62. [DOI: 10.1021/jo402862r] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Sonam Bhatia
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S.
Nagar, Punjab 160 062, India
| | - Prasad V. Bharatam
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S.
Nagar, Punjab 160 062, India
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59
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Zhuo MH, Jiang YJ, Fan YS, Gao Y, Liu S, Zhang S. Enantioselective synthesis of triarylmethanes by chiral imidodiphosphoric acids catalyzed Friedel-Crafts reactions. Org Lett 2014; 16:1096-9. [PMID: 24490630 DOI: 10.1021/ol403680c] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The first enantioselective synthesis of pyrrolyl-substituted triarylmethanes has been accomplished using a novel imidodiphosphoric acid catalyst, which is derived from two (R)-BINOL frameworks with different 3,3'-substituents. This strategy was also expanded to the synthesis of bis(indolyl)-substituted triarylmethanes with high enantioselectivities, which could only be obtained with moderate ee values in previous reports. These two efficient Friedel-Crafts alkylation processes feature low catalyst loading, broad functional group compatibilities, and the potential to provide practical pathways for the synthesis of enantioenriched bioactive triarylmethanes.
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Affiliation(s)
- Ming-Hua Zhuo
- College of Chemistry, Jilin University , 2699 Qianjin Street, Changchun 130012, China
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60
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Nagase Y, Sugiyama T, Nomiyama S, Yonekura K, Tsuchimoto T. Zinc-Catalyzed Direct Cyanation of Indoles and Pyrroles: Nitromethane as a Source of a Cyano Group. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201301073] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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61
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Nagase Y, Miyamura T, Inoue K, Tsuchimoto T. Indium-catalyzed Annulation of Indoles with Ethyl (2-Ethynylaryl)methyl Carbonates: Synthesis and Photoluminescent Properties of Aryl- and Heteroaryl[b]carbazoles. CHEM LETT 2013. [DOI: 10.1246/cl.130402] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yuta Nagase
- Department of Applied Chemistry, School of Science and Technology, Meiji University
| | - Takuhiro Miyamura
- Department of Applied Chemistry, School of Science and Technology, Meiji University
| | - Kensuke Inoue
- Department of Applied Chemistry, School of Science and Technology, Meiji University
| | - Teruhisa Tsuchimoto
- Department of Applied Chemistry, School of Science and Technology, Meiji University
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62
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Chermahini AN, Hosseinzadeh B, Salimi Beni A, Teimouri A. Theoretical studies on the reactivity of mono-substituted imidazole ligands. Struct Chem 2013. [DOI: 10.1007/s11224-013-0322-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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63
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Kiyooka SI, Kaneno D, Fujiyama R. Intrinsic reactivity index as a single scale directed toward both electrophilicity and nucleophilicity using frontier molecular orbitals. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.03.083] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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64
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Bhatia S, Malkhede YJ, Bharatam PV. Existence of dynamic tautomerism and divalent N(I) character in N-(pyridin-2-yl)thiazol-2-amine. J Comput Chem 2013; 34:1577-88. [PMID: 23609068 DOI: 10.1002/jcc.23293] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Revised: 03/14/2013] [Accepted: 03/15/2013] [Indexed: 01/23/2023]
Abstract
N-(pyridin-2-yl)thiazol-2-amine is a versatile chemical functional unit present in many therapeutically important species. Quantum chemical analysis shows that there are six competitive isomeric structures possible for this class of compounds within a relative energy difference of ∼4 kcal/mol. Some of the isomeric structures possess divalent N(I) character. There appears to be a competition between the thiazole and pyridine groups to accommodate the tautomeric hydrogen, and consequently show electron donating property in the structure with R-N←L representation. Details of electron distribution, tautomeric preferences, protonation energy, and divalent N(I) character, and so on, of this class of compounds are presented in this article. Subsequently, upon protonation, (L→N←L)(⊕) character is clearly evident in these moieties as molecular orbital analysis clearly shows two lone pairs of electrons on the central nitrogen, in this system.
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Affiliation(s)
- Sonam Bhatia
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S. A. S. Nagar, Mohali, Punjab, 160 062, India
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65
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Lebold TP, Wood JL, Deitch J, Lodewyk MW, Tantillo DJ, Sarpong R. A divergent approach to the synthesis of the yohimbinoid alkaloids venenatine and alstovenine. Nat Chem 2012; 5:126-31. [PMID: 23344433 PMCID: PMC3556932 DOI: 10.1038/nchem.1528] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Accepted: 11/12/2012] [Indexed: 11/09/2022]
Abstract
The yohimbinoid alkaloids continue to receive considerable attention from the synthetic community because of their interesting chemical structures and varied biological activity. Although there are several elegant syntheses of certain members of this group of alkaloids, a truly unified approach has yet to be developed. In short, general approaches to this compound class are hampered by a lack of complete control in setting the C(3) stereocentre at a late stage. Herein, we report that a functionalized hydrindanone enables a divergent strategy that builds on existing precedent to address this long-standing challenge. Utilizing an aminonitrile intermediate, the stereochemistry at C(3) of the yohimbinoid skeleton can be controlled effectively in a Pictet-Spengler reaction. We applied this approach to the first total syntheses of the C(3) epimeric natural products venenatine and alstovenine.
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Affiliation(s)
- Terry P Lebold
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, USA
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66
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Nandekar PP, Tumbi KM, Bansal N, Rathod VP, Labhsetwar LB, Soumya N, Singh S, Sangamwar AT. Chem-bioinformatics and in vitro approaches for candidate optimization: a case study of NSC745689 as a promising antitumor agent. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0364-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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67
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Taxak N, Dixit VA, Bharatam PV. Density functional study on the cytochrome-mediated S-oxidation: identification of crucial reactive intermediate on the metabolic path of thiazolidinediones. J Phys Chem A 2012; 116:10441-50. [PMID: 23025570 DOI: 10.1021/jp308023g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
S-Oxidation is an important cytochrome P450 (CYP450)-catalyzed reaction, and the structural and energetic details of this process can only be studied by using quantum chemical methods. Thiazolidinedione (TZD) ring metabolism involving initial S-oxidation leads to the generation of reactive metabolites (RMs) and subsequent toxicity forcing the withdrawal of the glitazone class of drugs, thus, the study of the biochemical pathway of TZD ring metabolism is a subject of interest. The S-oxidation of the TZD ring and the formation of the isocyanate intermediate (ISC) was implicated as a possible pathway; however, there are several questions still unanswered in this biochemical pathway. The current study focuses on the CYP450-mediated S-oxidation, fate of the sulfoxide product (TZDSO), ring cleavage to ISC, and formation of nucleophilic adducts. The process of S-oxidation was explored by using Cpd I (iron(IV)-oxo porphyrin, to mimic CYP450) at TZVP/6-311+G(d) basis set. The barriers were calculated after incorporating dispersion and solvent corrections. The metabolic conversion from TZDSO to ISC (studied at B3LYP/6-311++G(2df,3pd)//B3LYP/6-31+G(d)) required a novel protonated intermediate, TZDSOH(+). The effect of higher basis sets (6-311+G(d,p), aug-cc-pvqz) on this conversion was studied. TZDSOH(+) was observed to be more reactive and thermodynamically accessible than ISC, indicating that TZDSOH(+) is the actual reactive intermediate leading to toxicity of the TZD class of compounds.
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Affiliation(s)
- Nikhil Taxak
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), S. A. S. Nagar (Mohali), 160 062 Punjab, India
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68
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Bhatia S, Bagul C, Kasetti Y, Patel DS, Bharatam PV. Divalent N(I) character in 2-(thiazol-2-yl)guanidine: an electronic structure analysis. J Phys Chem A 2012; 116:9071-9. [PMID: 22920939 DOI: 10.1021/jp304789u] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Several medicinally important compounds carry a 2-(thiazol-2-yl)guanidine unit. These species are generally (erroneously) represented as 1-(thiazol-2-yl)guanidine species. Quantum chemical studies were performed to identify the appropriate tautomeric state of this class of compounds. B3LYP/6-31+G(d) calculations indicate the preferred tautomeric state of these species is associated with the 2-(thiazol-2-yl)guanidine structure rather than the 1-(thiazol-2-yl)guanidine structure. G2MP2 calculations on the model system were carried out to study the electronic structure, electron delocalization, and protonation energy; MESP, ELF, HOMA, AIM, and NBO analyses were also carried out. The results indicate that this class of compounds may be treated as species with hidden ::N(←L)R character. Upon protonation of the thiazole ring nitrogen, these systems show the electronic structure as in ::N(←L)2(⊕) systems with divalent N(I) oxidation state.
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Affiliation(s)
- Sonam Bhatia
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) , Sector 67, S. A. S. Nagar, Punjab 160062, India
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69
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Das D, Pratihar S, Roy S. Heterobimetallic Pd–Sn Catalysis: A Suzuki, Tandem Ring-Closing Sequence toward Indeno[2,1-b]thiophenes and Indeno[2,1-b]indoles. Org Lett 2012; 14:4870-3. [DOI: 10.1021/ol3021995] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Debjit Das
- Organometallics & Catalysis Laboratory, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India, and Organometallics & Catalysis Laboratory, School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751013, India
| | - Sanjay Pratihar
- Organometallics & Catalysis Laboratory, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India, and Organometallics & Catalysis Laboratory, School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751013, India
| | - Sujit Roy
- Organometallics & Catalysis Laboratory, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India, and Organometallics & Catalysis Laboratory, School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751013, India
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70
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Galabov B, Ilieva S, Koleva G, Allen WD, Schaefer III HF, von R. Schleyer P. Structure-reactivity relationships for aromatic molecules: electrostatic potentials at nuclei and electrophile affinity indices. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2012. [DOI: 10.1002/wcms.1112] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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71
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Shravani M, Balaiah S, Srinivas K, Bhanuprakash K, Huc I. Unusual Regioselective Electrophilic Substitutions in Quinoline Foldamers: Conceptual DFT and Frontier Molecular Orbital Analysis Reveal the Crucial Role of Folding and Substituents. Chemphyschem 2012; 13:3526-34. [PMID: 22887893 DOI: 10.1002/cphc.201200397] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Madishetti Shravani
- National Institute of Pharmaceutical Education and Research, Hyderabad, Balanagar, India
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72
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73
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Gómez-Bombarelli R, González-Pérez M, Calle E, Casado J. Potential of the NBP Method for the Study of Alkylation Mechanisms: NBP as a DNA-Model. Chem Res Toxicol 2012; 25:1176-91. [DOI: 10.1021/tx300065v] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rafael Gómez-Bombarelli
- Departamento de Química Física, Facultad de
Ciencias Químicas, Universidad de Salamanca, Plaza de los Caídos, 1-5, E-37008 Salamanca, Spain
| | - Marina González-Pérez
- Departamento de Química Física, Facultad de
Ciencias Químicas, Universidad de Salamanca, Plaza de los Caídos, 1-5, E-37008 Salamanca, Spain
| | - Emilio Calle
- Departamento de Química Física, Facultad de
Ciencias Químicas, Universidad de Salamanca, Plaza de los Caídos, 1-5, E-37008 Salamanca, Spain
| | - Julio Casado
- Departamento de Química Física, Facultad de
Ciencias Químicas, Universidad de Salamanca, Plaza de los Caídos, 1-5, E-37008 Salamanca, Spain
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74
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Maity AK, Roy S. A Multimetallic Piano-Stool Ir–Sn3 Catalyst for Nucleophilic Substitution Reaction of γ-Hydroxy Lactams through N-Acyliminium Ions. J Org Chem 2012; 77:2935-41. [DOI: 10.1021/jo202359e] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Arnab Kumar Maity
- Organometallics & Catalysis Laboratory, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
| | - Sujit Roy
- School of Basic Sciences, Indian Institute of Technology, Bhubaneswar 751013,
India
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75
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Deuri S, Phukan P. A DFT study on nucleophilicity and site selectivity of nitrogen nucleophiles. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2011.11.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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76
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Mangalaraj S, Ramanathan CR. Construction of tetrahydro-β-carboline skeletons via Brønsted acid activation of imide carbonyl group: syntheses of indole alkaloids (±)-harmicine and (±)-10-desbromoarborescidine-A. RSC Adv 2012. [DOI: 10.1039/c2ra21734a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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77
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Abstract
The nucleophilicity N index (J. Org. Chem. 2008, 73, 4615), the inverse of the electrophilicity, 1/ω, and the recently proposed inverse of the electrodonating power, 1/ω⁻, (J. Org. Chem. 2010, 75, 4957) have been checked toward (i) a series of single 5-substituted indoles for which rate constants are available, (ii) a series of para-substituted phenols, and for (iii) a series of 2,5-disubstituted bicyclic[2.2.1]hepta-2,5-dienes which display concurrently electrophilic and nucleophilic behaviors. While all considered indices account well for the nucleophilic behavior of organic molecules having a single substitution, the nucleophilicity N index works better for more complex molecules. Unlike, the inverse of the electrophilicity, 1/ω, (R(2) = 0.71), and the inverse of the electrodonating power, 1/ω⁻ (R(2) = 0.83), a very good correlation of the nucleophilicity N index of twelve 2-substituted-6-methoxy-bicyclic[2.2.1]hepta-2,5-dienes versus the activation energy associated with the nucleophilic attack on 1,1-dicyanoethylene is found (R(2) = 0.99). This comparative study allows to assert that the nucleophilicity N index is a measure of the nucleophilicity of complex organic molecules displaying concurrently electrophilic and nucleophilic behaviors.
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Affiliation(s)
- Luis R Domingo
- Universidad de Valencia, Departamento de Química Orgánica, Dr Moliner 50, E-46100, Burjassot, Valencia, Spain.
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78
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Pratihar S, Roy S. Reactivity and Selectivity of Organotin Reagents in Allylation and Arylation: Nucleophilicity Parameter as a Guide. Organometallics 2011. [DOI: 10.1021/om101030c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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79
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Mono cationic palladium(II): Synthesis, characterization and catalytic activity in Suzuki coupling. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.03.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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80
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Affiliation(s)
- Pratim Kumar Chattaraj
- Department of Chemistry, Center for Theoretical Studies, Indian Institute of Technology, Kharagpur, India
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81
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A theoretical thermodynamic investigation of cascade reactions in dinuclear octa-azacryptates involving carbon dioxide. J Mol Model 2011; 17:3151-62. [DOI: 10.1007/s00894-011-0965-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2010] [Accepted: 01/06/2011] [Indexed: 10/18/2022]
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82
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Cimarelli C, Fratoni D, Mazzanti A, Palmieri G. Betti Reaction of Cyclic Imines with Naphthols and Phenols - Preparation of New Derivatives of Betti's Bases. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001611] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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83
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Del Grosso A, Singleton PJ, Muryn CA, Ingleson MJ. Pinacol Boronates by Direct Arene Borylation with Borenium Cations. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006196] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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84
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Del Grosso A, Singleton PJ, Muryn CA, Ingleson MJ. Pinacol Boronates by Direct Arene Borylation with Borenium Cations. Angew Chem Int Ed Engl 2011; 50:2102-6. [DOI: 10.1002/anie.201006196] [Citation(s) in RCA: 172] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2010] [Revised: 11/10/2010] [Indexed: 11/09/2022]
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85
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Mbatia HW, Ulloa OA, Kennedy DP, Incarvito CD, Burdette SC. Iodination of anilines and phenols with 18-crown-6 supported ICl2−. Org Biomol Chem 2011; 9:2987-91. [DOI: 10.1039/c0ob00926a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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