51
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Xu L, Li H, Liao Z, Lou K, Xie H, Li H, Wang W. Divergent Synthesis of Imidazoles and Quinazolines via Pd(OAc)2-Catalyzed Annulation of N-Allylamidines. Org Lett 2015; 17:3434-7. [DOI: 10.1021/acs.orglett.5b01435] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li Xu
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Hongxian Li
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Ziyang Liao
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Kaiyan Lou
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Hexin Xie
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Hao Li
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
| | - Wei Wang
- Shanghai
Key Laboratory of New Drug Design, School of Pharmacy, and State Key
Laboratory of Bioengineering Reactor, East China University of Science and Technology, 130 Mei-long Road, Shanghai 200237, China
- Department
of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
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52
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Kaur N. Applications of Microwaves in the Synthesis of Polycyclic Six-Membered N,N-Heterocycles. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2013.828755] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, Rajasthan, India
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53
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Cai Y, Jalan A, Kubosumi AR, Castle SL. Microwave-Promoted Tin-Free Iminyl Radical Cyclization with TEMPO Trapping: A Practical Synthesis of 2-Acylpyrroles. Org Lett 2015; 17:488-91. [DOI: 10.1021/ol5035047] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yu Cai
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Ankur Jalan
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Aaron R. Kubosumi
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Steven L. Castle
- Department of Chemistry and
Biochemistry, Brigham Young University, Provo, Utah 84602, United States
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54
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Siddiqui IR, Srivastava A, Singh A, Shamim S, Rai P. MoO2Cl2(DMF)2 catalyzed microwave assisted reductive cyclisation of nitroaromatics into dibenzodiazepines. RSC Adv 2015. [DOI: 10.1039/c4ra11089g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Microwave induced, MoO2Cl2(DMF)2 catalyzed synthesis of novel dibenzodiazepine scaffolds with potential biocidal activity.
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Affiliation(s)
- I. R. Siddiqui
- Laboratory of Green Synthesis
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Anushree Srivastava
- Laboratory of Green Synthesis
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Archana Singh
- Laboratory of Green Synthesis
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Shayna Shamim
- Laboratory of Green Synthesis
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
| | - Pragati Rai
- Laboratory of Green Synthesis
- Department of Chemistry
- University of Allahabad
- Allahabad-211002
- India
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55
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Chen M, Zhang M, Xiong B, Tan Z, Lv W, Jiang H. A novel ruthenium-catalyzed dehydrogenative synthesis of 2-arylquinazolines from 2-aminoaryl methanols and benzonitriles. Org Lett 2014; 16:6028-31. [PMID: 25381883 DOI: 10.1021/ol503052s] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
By employing a commercially available Ru3(CO)12/Xantphos/t-BuOK catalyst system, a novel and straightforward ruthenium-catalyzed dehydrogenative synthesis of 2-arylquinazolines has been demonstrated. A series of 2-aminoaryl methanols were efficiently converted in combination with different types of benzonitriles into various desired products in moderate to good yields upon isolation. The synthetic protocol proceeds with the advantages of operational simplicity, high atom efficiency, broad substrate scope, and no need for the use of less environmentally benign halogenated reagents, offering an important basis for accessing 2-arylquinazolines.
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Affiliation(s)
- Mengmeng Chen
- School of Chemistry & Chemical Engineering, South China University of Technology , Guangzhou 510641, People's Republic of China
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56
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Wang H, Chen H, Chen Y, Deng GJ. Palladium-catalyzed one pot 2-arylquinazoline formation via hydrogen-transfer strategy. Org Biomol Chem 2014; 12:7792-9. [PMID: 25156121 DOI: 10.1039/c4ob01296h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The palladium catalytic system was first applied to 2-arylquinazoline synthesis via hydrogen transfer methodology. Various (E)-2-nitrobenzaldehyde O-methyl oximes reacted easily with alcohols or benzyl amines to provide N-heterocyclic compounds in good to high yields. Similarly, the heterocyclic products could be prepared by the reaction of 1-(2-nitrophenyl)ethanone, urea and benzyl alcohols. In these reactions, the nitro group was reduced in situ by hydrogen generated from the alcohol dehydrogenation step.
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Affiliation(s)
- Huamin Wang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
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57
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Li C, An S, Zhu Y, Zhang J, Kang Y, Liu P, Wang Y, Li J. Copper-catalyzed intermolecular cyclization of nitriles and 2-aminobenzylamine for 3,4-dihydroquinazolines and quinazolines synthesis via cascade coupling and aerobic oxidation. RSC Adv 2014. [DOI: 10.1039/c4ra09240f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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58
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Battula S, Vishwakarma RA, Ahmed QN. Cu–benzotriazole-catalyzed electrophilic cyclization of N-arylimines: a methodical tandem approach to O-protected-4hydroxyquinazolines-. RSC Adv 2014. [DOI: 10.1039/c4ra07377k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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59
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Mazzei P, Fusco L, Piccolo A. Acetone-induced polymerisation of 3-aminopropyltrimethoxysilane (APTMS) as revealed by NMR spectroscopy. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2014; 52:383-388. [PMID: 24757082 DOI: 10.1002/mrc.4076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 03/20/2014] [Accepted: 03/27/2014] [Indexed: 06/03/2023]
Abstract
We followed the reactivity of acetone with 3-aminopropyltrimethoxysilane, a potential organosilane coupling agent, by (1)H, (13)C and (29)Si NMR spectroscopy. Selective 1D and 2D-edited NMR experiments significantly contributed to simplify the spectral complexity of reaction solution and elucidated molecular structures within progressive reaction phases. The course of the 3-aminopropyltrimethoxysilane reaction with acetone was shown by a progressive decrease of both reactants, and a concomitant appearance of water and methanol, due to formation of imine and hydrolysis of alkoxysilane groups, respectively. The occurrence of multiple siloxane linkages in a progressively larger cross-linked macromolecular structure was revealed by DOSY-NMR experiments and new signals in (29)Si-NMR spectra at different reaction times. The NMR approach described here may be applied to investigate the reactivity of other γ-aminopropylalkoxysilanes and contribute to define procedures for the preparation of silica-based materials.
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Affiliation(s)
- Pierluigi Mazzei
- Centro Interdipartimentale per la Risonanza Magnetica Nucleare, Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy
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60
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Copper-catalyzed domino reaction between 1-(2-halophenyl)methanamines and amidines or imidates for the synthesis of 2-substituted quinazolines. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.02.066] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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61
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Walton JC. The oxime portmanteau motif: released heteroradicals undergo incisive EPR interrogation and deliver diverse heterocycles. Acc Chem Res 2014; 47:1406-16. [PMID: 24654991 PMCID: PMC4012714 DOI: 10.1021/ar500017f] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Selective syntheses are now available for compounds of many classes, based on C-centered radicals, exploiting a diverse range of mechanisms. The prospect for chemistry based around N- and O-centered radicals is probably more favorable because of the importance of heterocycles as biologically active materials. Heteroradical chemistry is still comparatively underdeveloped due to the need for safe and easy ways of generating them. Oxime esters appeared promising candidates to meet this need because literature reports and our EPR spectroscopic examinations showed they readily dissociated on photolysis with production of a pair of N- and O-centered radicals. It soon became apparent that a whole suite of benign oxime-containing molecules could be pressed into service. The bimodality of the oxime motif meant that by suitable choice of functionality the reactions could be directed to yield selectively products from either the N-centered radicals or from the O-centered radicals. We found that on one hand photolyses of acetophenone oxime esters of carboxylic acids yielded alicyclics. On the other hand, aromatic and heteroaromatic acyl oximes (as well as dioxime oxalates) afforded good yields of phenanthridines and related heterocycles. Easily prepared oxime oxalate amides released carbamoyl radicals, and pleasingly, β-lactams were thereby obtained. Oxime carbonates and oxime carbamates, available via our novel 1,1'-carbonyldiimidazole (CDI)-based preparations, were accessible alternatives for iminyl radicals and hence for phenanthridine preparations. In their second modes, these compounds proved their value as precursors for exotic alkoxycarbonyloxyl and carbamoyloxyl radicals. Microwave-assistance was shown to be a particularly convenient procedure with O-phenyl oxime ethers. The iminyl radicals generated from such precursors with alkene, alkyne, and aromatic acceptor substituents furnished pyrrole, quinoline, phenanthridine, benzonaphthiridine, indolopyridine, and other systems. Microwave irradiations with 2-(aminoaryl)alkanone O-phenyl oximes enabled either dihydroquinazolines or quinazolines to be obtained in very good yields. The fine quality of the EPR spectra, acquired during photolyses of all the O-carbonyl oxime types, marked this as an important complement to existing ways of obtaining such spectra in solution. Quantifications enabled SARs to be obtained for key reaction types of N- and O-centered radicals, thus putting mechanistic chemistry in this area on a much firmer footing. Surprises included the inverse gem-dimethyl effect in 5-exo-cyclizations of iminyls and the interplay of spiro- with ortho-cyclization onto aromatics. Insights into unusual 4-exo-cyclizations of carbamoyl radicals showed the process to be more viable than pent-4-enyl 4-exo-ring closure. Another surprise was the magnitude of the difference in CO2 loss rate from alkoxycarbonyloxyl radicals as compared with acyloxyl radicals. Their rapid 5-exo-cyclization was charted, as was their preferred spiro-cyclization onto aromatics. The first evidence that N-monosubstituted carbamoyloxyls had finite lifetimes was also forthcoming. It is evident that oxime derivatives have excellent credentials as reagents for radical generation and that there is ample room to extend their applications to additional radical types and for further heterocycle syntheses. There is also clear scope for the development of preparative procedures based around the alkoxyl and aminyl radicals that emerge downstream from oxime carbonate and oxime carbamate dissociations.
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Affiliation(s)
- John C. Walton
- EaStCHEM School of Chemistry, University of St. Andrews, St.
Andrews, Fife KY16 9ST, U.K
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62
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Chen J, Natte K, Neumann H, Wu XF. A convenient palladium-catalyzed carbonylative synthesis of quinazolines from 2-aminobenzylamine and aryl bromides. RSC Adv 2014. [DOI: 10.1039/c4ra11303a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An interesting approach for the synthesis of 2-functionalized quinazolines has been developed. Various quinazolines have been produced in moderate to excellent yields.
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Affiliation(s)
- Jianbin Chen
- Leibniz-Institut für Katalyse an der Universität Rostock
- 18059 Rostock, Germany
| | - Kishore Natte
- Leibniz-Institut für Katalyse an der Universität Rostock
- 18059 Rostock, Germany
| | - Helfried Neumann
- Leibniz-Institut für Katalyse an der Universität Rostock
- 18059 Rostock, Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse an der Universität Rostock
- 18059 Rostock, Germany
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63
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Baghbanian SM, Farhang M. CuFe2O4 nanoparticles: a magnetically recoverable and reusable catalyst for the synthesis of quinoline and quinazoline derivatives in aqueous media. RSC Adv 2014. [DOI: 10.1039/c3ra46119j] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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64
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A DMAP-catalyzed mild and efficient synthesis of 1,2-dihydroquinazolines via a one-pot three-component protocol. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.10.157] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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65
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Chen YC, Yang DY. Visible light-mediated synthesis of quinazolines from 1,2-dihydroquinazoline 3-oxides. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.09.089] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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66
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One-pot tandem synthesis of 2-arylquinazolines by a multicomponent cyclization reaction. Molecules 2013; 18:13860-9. [PMID: 24217327 PMCID: PMC6270323 DOI: 10.3390/molecules181113860] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 10/21/2013] [Accepted: 10/21/2013] [Indexed: 11/17/2022] Open
Abstract
A series of 2-arylquinazolines have been synthesized in moderate to excellent yields by one-pot tandem reaction of (2-aminophenyl)methanols, aldehydes and ceric ammonium nitrate (CAN). The utility of this transformation was demonstrated by its compatibility with a wide range of functional groups. Thus, the method represents a simple and practical procedure to access 2-arylquinazolines.
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67
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Chen Z, Chen J, Liu M, Ding J, Gao W, Huang X, Wu H. Unexpected Copper-Catalyzed Cascade Synthesis of Quinazoline Derivatives. J Org Chem 2013; 78:11342-8. [DOI: 10.1021/jo401908g] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Zhongyan Chen
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jiuxi Chen
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Miaochang Liu
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jinchang Ding
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Wenxia Gao
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xiaobo Huang
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Huayue Wu
- College of Chemistry and
Materials Engineering, Wenzhou University, Wenzhou 325035, China
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68
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Deb I, Yoshikai N. Phenanthridine Synthesis through Iron-Catalyzed Intramolecular N-Arylation of O-Acetyl Oxime. Org Lett 2013; 15:4254-7. [DOI: 10.1021/ol4020392] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Indubhusan Deb
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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69
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Rohlmann R, Stopka T, Richter H, Garcı́a Mancheño O. Iron-Catalyzed Oxidative Tandem Reactions with TEMPO Oxoammonium Salts: Synthesis of Dihydroquinazolines and Quinolines. J Org Chem 2013; 78:6050-64. [DOI: 10.1021/jo4007199] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Renate Rohlmann
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster,
Germany
| | - Tobias Stopka
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster,
Germany
| | - Heinrich Richter
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster,
Germany
| | - Olga Garcı́a Mancheño
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster,
Germany
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70
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McBurney RT, Walton JC. Interplay of ortho- with spiro-cyclisation during iminyl radical closures onto arenes and heteroarenes. Beilstein J Org Chem 2013; 9:1083-92. [PMID: 23766822 PMCID: PMC3678706 DOI: 10.3762/bjoc.9.120] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 05/09/2013] [Indexed: 12/05/2022] Open
Abstract
Sensitised photolyses of ethoxycarbonyl oximes of aromatic and heteroaromatic ketones yielded iminyl radicals, which were characterised by EPR spectroscopy. Iminyls with suitably placed arene or heteroarene acceptors underwent cyclisations yielding phenanthridine-type products from ortho-additions. For benzofuran and benzothiophene acceptors, spiro-cyclisation predominated at low temperatures, but thermodynamic control ensured ortho-products, benzofuro- or benzothieno-isoquinolines, formed at higher temperatures. Estimates by steady-state kinetic EPR established that iminyl radical cyclisations onto aromatics took place about an order of magnitude more slowly than prototypical C-centred radicals. The cyclisation energetics were investigated by DFT computations, which gave insights into factors influencing the two cyclisation modes.
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Affiliation(s)
- Roy T McBurney
- EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, Fife, KY16 9ST, UK
| | - John C Walton
- EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, Fife, KY16 9ST, UK
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71
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Panja SK, Saha S. Recyclable, magnetic ionic liquid bmim[FeCl4]-catalyzed, multicomponent, solvent-free, green synthesis of quinazolines. RSC Adv 2013. [DOI: 10.1039/c3ra42039f] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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72
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Fang J, Zhou J, Fang Z. Synthesis of 2-substituted quinazolinesvia iridium catalysis. RSC Adv 2013. [DOI: 10.1039/c2ra22278g] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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73
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74
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Panja SK, Dwivedi N, Saha S. I2-Catalyzed three-component protocol for the synthesis of quinazolines. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.08.016] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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75
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Bandaru M, Sabbavarapu NM, Pavan AKBS, Akula AK, Durga NYV. Simple and straight forward synthesis of 2,4-disubstituted quinazolines in aqueous medium. ACTA ACUST UNITED AC 2012. [DOI: 10.5155/eurjchem.3.2.252-257.527] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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76
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McBurney RT, Portela-Cubillo F, Walton JC. Microwave assisted radical organic syntheses. RSC Adv 2012. [DOI: 10.1039/c1ra00909e] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [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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McBurney RT, Harper AD, Slawin AMZ, Walton JC. An all-purpose preparation of oxime carbonates and resultant insights into the chemistry of alkoxycarbonyloxyl radicals. Chem Sci 2012. [DOI: 10.1039/c2sc21298f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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78
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Sanmartín-Matalobos J, Portela-García C, Martínez-Rodríguez L, González-Bello C, Lence E, García-Deibe AM, Fondo M. Structural variety of zinc and copper complexes based on a 2,3-disubstituted 1,2,3,4-tetrahydroquinazoline ligand. Dalton Trans 2012; 41:6998-7004. [DOI: 10.1039/c2dt30550j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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79
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Saito T, Nakano H, Terada H, Kutsumura N, Otani T. Expedient Synthesis of 3,4-Dihydroquinazolines via Tandem Addition — Conjugate Addition Cyclization of Carbodiimides Bearing a Michael Acceptor. HETEROCYCLES 2012. [DOI: 10.3987/com-11-s(p)70] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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80
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Han B, Yang XL, Wang C, Bai YW, Pan TC, Chen X, Yu W. CuCl/DABCO/4-HO-TEMPO-catalyzed aerobic oxidative synthesis of 2-substituted quinazolines and 4H-3,1-benzoxazines. J Org Chem 2011; 77:1136-42. [PMID: 22168403 DOI: 10.1021/jo2020399] [Citation(s) in RCA: 148] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Cu/N-ligand/TEMPO catalytic system was first applied to the aerobic oxidative synthesis of heterocycles. As demonstrated, 2-substituted quinazolines and 4H-3,1-benzoxazines were synthesized efficiently from the one-pot reaction of aldehydes with 2-aminobenzylamines and 2-aminobenzyl alcohols, respectively, by employing CuCl/DABCO/4-HO-TEMPO as the catalysts and oxygen as the terminal oxidant.
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Affiliation(s)
- Bing Han
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui Street, Lanzhou 730000, P. R. China.
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81
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McBurney RT, Slawin AMZ, Smart LA, Yu Y, Walton JC. UV promoted phenanthridine syntheses from oxime carbonate derived iminyl radicals. Chem Commun (Camb) 2011; 47:7974-6. [DOI: 10.1039/c1cc12720a] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Vicente J, Chicote MT, Martínez-Martínez AJ, Bautista D, Jones PG. Synthesis of a family of 3-alkyl- or 3-aryl-substituted 1,2-dihydroquinazolinium salts and their isomerization to 4-iminium-1,2,3,4-tetrahydroquinolines. Org Biomol Chem 2011; 9:2279-85. [DOI: 10.1039/c0ob00982b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dolle RE, Bourdonnec BL, Worm K, Morales GA, Thomas CJ, Zhang W. Comprehensive survey of chemical libraries for drug discovery and chemical biology: 2009. JOURNAL OF COMBINATORIAL CHEMISTRY 2010; 12:765-806. [PMID: 20923157 PMCID: PMC4140011 DOI: 10.1021/cc100128w] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Roland E Dolle
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, USA.
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Portela-Cubillo F, Scott JS, Walton JC. ChemInform Abstract: Microwave-Promoted Syntheses of Quinazolines and Dihydroquinazolines from 2-Aminoarylalkanone O-Phenyl Oximes. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/chin.200950174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wang H, Liu L, Wang Y, Peng C, Zhang J, Zhu Q. An efficient synthesis of 4-alkyl-2(1H)-quinazolinones and 4-alkyl-2-chloroquinazolines from 1-(2-alkynylphenyl)ureas. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.130] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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