751
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Barroso R, Escribano M, Cabal MP, Valdés C. Tosylhydrazide-Promoted Diastereoselective Intramolecular 1,3-Dipolar Cycloadditions: Synthesis of Tetrahydropyrrolo[3,4-c]pyrazoles. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301587] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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752
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Zhu Y, Liu X, Dong S, Zhou Y, Li W, Lin L, Feng X. Asymmetric NH Insertion of Secondary and Primary Anilines under the Catalysis of Palladium and Chiral Guanidine Derivatives. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201308501] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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753
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Zhu Y, Liu X, Dong S, Zhou Y, Li W, Lin L, Feng X. Asymmetric NH Insertion of Secondary and Primary Anilines under the Catalysis of Palladium and Chiral Guanidine Derivatives. Angew Chem Int Ed Engl 2014; 53:1636-40. [DOI: 10.1002/anie.201308501] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 12/04/2013] [Indexed: 11/11/2022]
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754
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Shi J, Yan Y, Li Q, Xu HE, Yi W. Rhodium(iii)-catalyzed C2-selective carbenoid functionalization and subsequent C7-alkenylation of indoles. Chem Commun (Camb) 2014; 50:6483-6. [DOI: 10.1039/c4cc01593b] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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755
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Zhang YS, Tang XY, Shi M. Unprecedented synthesis of aza-bridged benzodioxepine derivatives through a tandem Rh(ii)-catalyzed 1,3-rearrangement/[3+2] cycloaddition of carbonyltriazoles. Chem Commun (Camb) 2014; 50:15971-4. [DOI: 10.1039/c4cc08339c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Rh(ii)-catalyzed novel tandem intramolecular cycloisomerizations of aldehydes or ketones with 1-sulfonyl 1,2,3-triazoles have been disclosed, providing a facile protocol to access a series of functionalized aza-bridged benzodioxepine heterocycles.
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Affiliation(s)
- Yong-Sheng Zhang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
| | - Xiang-Ying Tang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
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756
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Chauhan P, Ravi M, Singh S, Raju KSR, Bajpai V, Kumar B, Wahajuddin W, Yadav PP. Palladium and copper-catalyzed ligand-free coupling of phenylhydrazines in water. RSC Adv 2014. [DOI: 10.1039/c4ra04621h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
An efficient methodology for the synthesis of biaryls via Pd/Cu catalyzed coupling of unprotected phenylhydrazines in water is reported.
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Affiliation(s)
- Parul Chauhan
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
| | - Makthala Ravi
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
| | - Shikha Singh
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
| | - Kanumuri S. R. Raju
- Division of Pharmacokinetics and Metabolism
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
| | - Vikas Bajpai
- Sophisticated Analytical Instrument Facility
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
| | - Brijesh Kumar
- Sophisticated Analytical Instrument Facility
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
| | - Wahajuddin Wahajuddin
- Division of Pharmacokinetics and Metabolism
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
| | - Prem. P. Yadav
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031, India
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757
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Yin B, Zhang X, Liu J, Li X, Jiang H. Practical access to spiroacetal enol ethers via nucleophilic dearomatization of 2-furylmethylenepalladium halides generated by Pd-catalyzed coupling of furfural tosylhydrazones with aryl halides. Chem Commun (Camb) 2014; 50:8113-6. [DOI: 10.1039/c4cc01725k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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758
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Hu F, Xia Y, Liu Z, Ma C, Zhang Y, Wang J. Palladium-catalyzed three-component reaction of N-tosylhydrazone, norbornene and aryl halide. Org Biomol Chem 2014; 12:3590-3. [DOI: 10.1039/c4ob00590b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed three-component reaction that involves an intermolecular Heck-type reaction and alkyl palladium carbene migratory insertion has been demonstrated.
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Affiliation(s)
- Fangdong Hu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100, China
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
| | - Ying Xia
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Zhenxing Liu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Chen Ma
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100, China
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
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759
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Ding D, Lv X, Li J, Qiu L, Xu G, Sun J. A Pd-catalyzed cascade reaction of N–H insertion and oxidative dehydrogenative aromatization: a new entry to 2-amino-phenols. Org Biomol Chem 2014; 12:4084-8. [DOI: 10.1039/c4ob00652f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed cascade reaction of N–H insertion and oxidative dehydrogenative aromatization under an air atmosphere has been developed under relatively mild conditions.
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Affiliation(s)
- Dong Ding
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
| | - Xiaobing Lv
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
| | - Jian Li
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
| | - Lin Qiu
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
| | - Guangyang Xu
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
| | - Jiangtao Sun
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
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760
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Liu Z, Wang L, Tan H, Zhou S, Fu T, Xia Y, Zhang Y, Wang J. Synthesis of 1H-indazoles from N-tosylhydrazones and nitroaromatic compounds. Chem Commun (Camb) 2014; 50:5061-3. [DOI: 10.1039/c4cc00962b] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1H-Indazoles have been synthesized from readily available N-tosylhydrazones and nitroaromatic compounds under mild reaction conditions.
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Affiliation(s)
- Zhenxing Liu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Long Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Haocheng Tan
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Shiyi Zhou
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Tianren Fu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Ying Xia
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
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761
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Yang Z, Xu J. Synthesis of benzo-γ-sultams via the Rh-catalyzed aromatic C–H functionalization of diazosulfonamides. Chem Commun (Camb) 2014; 50:3616-8. [DOI: 10.1039/c4cc00250d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diazosulfonamides are first introduced and employed to synthesize 1-aryl-benzo-γ-sultams via Rh-catalyzed intramolecular aromatic C–H functionalization.
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Affiliation(s)
- Zhanhui Yang
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029, P. R. China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029, P. R. China
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762
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Zhang H, Wang B, Wang K, Xie G, Li C, Zhang Y, Wang J. Pd-Catalyzed ring-opening cross-coupling of cyclopropenes with aryl iodides. Chem Commun (Camb) 2014; 50:8050-2. [DOI: 10.1039/c4cc03651d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed cross-coupling reaction of cyclopropenes with aryl iodides affords 1,3-butadiene products in good yields.
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Affiliation(s)
- Hang Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry, Peking University
- Beijing 100871, China
| | - Bo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry, Peking University
- Beijing 100871, China
| | - Kang Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry, Peking University
- Beijing 100871, China
| | - Guojun Xie
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry, Peking University
- Beijing 100871, China
| | - Changkun Li
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry, Peking University
- Beijing 100871, China
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry, Peking University
- Beijing 100871, China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry, Peking University
- Beijing 100871, China
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763
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Ding D, Liu G, Xu G, Li J, Wang G, Sun J. Palladium catalyzed N–H bond insertion and intramolecular cyclization cascade: the divergent synthesis of heterocyclics. Org Biomol Chem 2014; 12:2533-7. [DOI: 10.1039/c4ob00001c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed one-pot procedure of N–H insertion and Heck cyclization/base promoted cyclization has been developed.
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Affiliation(s)
- Dong Ding
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
| | - Gang Liu
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
| | - Guangyang Xu
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
| | - Jian Li
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
| | - Guoping Wang
- School of Petroleum Engineering
- Changzhou University
- Changzhou 213164, P. R. China
| | - Jiangtao Sun
- School of Pharmaceutical Engineering & Life Science
- Changzhou University
- Changzhou 213164, P. R. China
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764
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Wu XX, Zhou PX, Wang LJ, Xu PF, Liang YM. Synthesis of polycyclic substituted vinylarenes via a one-pot intramolecular aryl alkylation–N-tosylhydrazone insertion reaction. Chem Commun (Camb) 2014; 50:3882-4. [DOI: 10.1039/c4cc00809j] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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765
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Zhong W, Xie M, Li Y, Yan H. Investigation into the reactivity of 16-electron complexes Cp#Co(S2C2B10H10) (Cp# = Cp, Cp*) towards methyl diazoacetate and toluenesulphonyl azide. RSC Adv 2014. [DOI: 10.1039/c4ra13017k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
A three-component reaction of the 16-electron half-sandwich complex Cp*Co(S2C2B10H10) (2) with both methyl diazoacetate (MDA) and toluenesulphonyl azide (TsN3) led to the formation of complexes 3 and 4, while a two-component reaction of complex 2 with MDA afforded products 5–7.
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Affiliation(s)
- Wei Zhong
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
- College of Biological, Chemical Sciences and Engineering
| | - Mingshi Xie
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
| | - Yizhi Li
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
| | - Hong Yan
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
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766
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Kisan HK, Sunoj RB. Deciphering the origin of cooperative catalysis by dirhodium acetate and chiral spiro phosphoric acid in an asymmetric amination reaction. Chem Commun (Camb) 2014; 50:14639-42. [DOI: 10.1039/c4cc05202a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The transition state for enantioselective protonation by chiral phosphoric acid enjoys a cooperative stabilization offered by the dirhodium catalyst.
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Affiliation(s)
- Hemanta K. Kisan
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076, India
| | - Raghavan B. Sunoj
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076, India
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767
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Xiao T, Zhang P, Xie Y, Wang J, Zhou L. CuI-catalyzed cross-coupling of terminal alkynes with dialkoxycarbenes: a general method for the synthesis of unsymmetrical propargylic acetals. Org Biomol Chem 2014; 12:6215-22. [DOI: 10.1039/c4ob00614c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A general source of dialkoxycarbenes, 2,2-dialkoxy-5,5-dimethyl-Δ3-1,3,4-oxadiazolines, have been successfully employed as coupling partners in CuI-catalyzed cross-coupling reactions with terminal alkynes, which afforded various unsymmetrical propargylic acetals in good yields.
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Affiliation(s)
- Tiebo Xiao
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275, China
| | - Ping Zhang
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275, China
| | - Yang Xie
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275, China
| | - Jun Wang
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275, China
| | - Lei Zhou
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275, China
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768
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Kong Y, Tang M, Wang Y. Regioselective Synthesis of 1,3,5-Trisubstituted Pyrazoles from N-Alkylated Tosylhydrazones and Terminal Alkynes. Org Lett 2013; 16:576-9. [DOI: 10.1021/ol403447g] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yuanfang Kong
- School
of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Meng Tang
- School
of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yun Wang
- School
of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
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769
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Wang X, Xu Y, Deng Y, Zhou Y, Feng J, Ji G, Zhang Y, Wang J. Pd-Carbene Migratory Insertion: Application to the Synthesis of Trifluoromethylated Alkenes and Dienes. Chemistry 2013; 20:961-5. [DOI: 10.1002/chem.201304143] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Indexed: 11/09/2022]
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770
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Hu F, Xia Y, Ye F, Liu Z, Ma C, Zhang Y, Wang J. Rhodium(III)-CatalyzedorthoAlkenylation ofN-Phenoxyacetamides withN-Tosylhydrazones or Diazoesters through CH Activation. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201309650] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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771
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Li H, Shangguan X, Zhang Z, Huang S, Zhang Y, Wang J. Formal carbon insertion of N-tosylhydrazone into B-B and B-Si bonds: gem-diborylation and gem-silylborylation of sp3 carbon. Org Lett 2013; 16:448-51. [PMID: 24350698 DOI: 10.1021/ol403338s] [Citation(s) in RCA: 121] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A convenient method is developed to synthesize 1,1-diboronates from the corresponding N-tosylhydrazones. This method is also applicable to synthesize 1-silyl-1-boron compounds. Meanwhile, derivatization and consecutive Pd-catalyzed cross-coupling reactions with 1,1-boronates were explored, demonstrating the synthetic potential of 1,1-diboronates.
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Affiliation(s)
- Huan Li
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University , Beijing 100871, China
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772
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Hu F, Xia Y, Ye F, Liu Z, Ma C, Zhang Y, Wang J. Rhodium(III)-CatalyzedorthoAlkenylation ofN-Phenoxyacetamides withN-Tosylhydrazones or Diazoesters through CH Activation. Angew Chem Int Ed Engl 2013; 53:1364-7. [DOI: 10.1002/anie.201309650] [Citation(s) in RCA: 220] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Indexed: 11/10/2022]
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773
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Prasan Ojha D, Ramaiah Prabhu K. Pd-Catalyzed Cross-Coupling Reactions of Hydrazones: Regioselective Synthesis of Highly Branched Dienes. J Org Chem 2013; 78:12136-43. [DOI: 10.1021/jo402153t] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Devi Prasan Ojha
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, Karnataka 560 012, India
| | - Kandikere Ramaiah Prabhu
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, Karnataka 560 012, India
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774
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Becker P, Priebbenow DL, Pirwerdjan R, Bolm C. Acylsilanes in Rhodium(III)-Catalyzed Directed Aromatic C-H Alkenylations and Siloxycarbene Reactions with CC Double Bonds. Angew Chem Int Ed Engl 2013; 53:269-71. [DOI: 10.1002/anie.201307446] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Indexed: 11/08/2022]
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775
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Becker P, Priebbenow DL, Pirwerdjan R, Bolm C. Acylsilanes in Rhodium(III)-Catalyzed Directed Aromatic C-H Alkenylations and Siloxycarbene Reactions with CC Double Bonds. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307446] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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776
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Palladium-catalyzed cross-coupling of cyclopropylmethyl N-tosylhydrazones with aromatic bromides: an easy access to multisubstituted 1,3-butadienes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.072] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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777
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Sha Q, Wei Y. Copper(I)-Catalyzed Wittig Olefination Reactions ofN-Tosylhydrazones with Trifluoromethylketones. ChemCatChem 2013. [DOI: 10.1002/cctc.201300583] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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778
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Xia Y, Zhang Y, Wang J. Catalytic Cascade Reactions Involving Metal Carbene Migratory Insertion. ACS Catal 2013. [DOI: 10.1021/cs4006666] [Citation(s) in RCA: 317] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ying Xia
- Beijing
National
Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Yan Zhang
- Beijing
National
Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing
National
Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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779
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Chen Z, Yan Q, Liu Z, Xu Y, Zhang Y. Copper-mediated synthesis of 1,2,3-triazoles from N-tosylhydrazones and anilines. Angew Chem Int Ed Engl 2013; 52:13324-8. [PMID: 24130174 DOI: 10.1002/anie.201306416] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/24/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Zhengkai Chen
- ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310027 (China)
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780
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Chen Z, Yan Q, Liu Z, Xu Y, Zhang Y. Copper-Mediated Synthesis of 1,2,3-Triazoles fromN-Tosylhydrazones and Anilines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306416] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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781
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Abstract
Diazo compounds are in widespread use in synthetic organic chemistry but have untapped potential in chemical biology. We report on the design and optimization of a phosphinoester that mediates the efficient conversion of azides into diazo compounds in phosphate buffer at neutral pH and room temperature. High yields are maintained in the presence of common nucleophilic or electrophilic functional groups, and reaction progress can be monitored by colorimetry. As azido groups are easy to install and maintain in biopolymers or their ligands, this new mode of azide reactivity could have substantial utility in chemical biology.
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Affiliation(s)
- Ho-Hsuan Chou
- Department of Chemistry and ∥Department of Biochemistry, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
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782
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Zhou PX, Ye YY, Liang YM. Palladium-Catalyzed Insertion of N-tosylhydrazones and Trapping with Carbon Nucleophiles. Org Lett 2013; 15:5080-3. [DOI: 10.1021/ol402457h] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ping-Xin Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, P. R. China
| | - Yu-Ying Ye
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, P. R. China
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783
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Liu Z, Xia Y, Zhou S, Wang L, Zhang Y, Wang J. Pd-Catalyzed Cyclization and Carbene Migratory Insertion: New Approach to 3-Vinylindoles and 3-Vinylbenzofurans. Org Lett 2013; 15:5032-5. [DOI: 10.1021/ol402368h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Zhenxing Liu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Ying Xia
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Shiyi Zhou
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Long Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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784
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Liu Z, Wang J. Cross-Coupling Reactions Involving Metal Carbene: From C═C/C–C Bond Formation to C–H Bond Functionalization. J Org Chem 2013; 78:10024-30. [DOI: 10.1021/jo401850q] [Citation(s) in RCA: 206] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhenxing Liu
- Beijing
National Laboratory of Molecular Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing
National Laboratory of Molecular Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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785
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Liu X, Ma X, Huang Y, Gu Z. Pd-Catalyzed Heck-Type Cascade Reactions with N-Tosyl Hydrazones: An Efficient Way to Alkenes via in Situ Generated Alkylpalladium. Org Lett 2013; 15:4814-7. [DOI: 10.1021/ol402210a] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xianglei Liu
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People’s Republic of China
| | - Xinna Ma
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People’s Republic of China
| | - Yunze Huang
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People’s Republic of China
| | - Zhenhua Gu
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People’s Republic of China
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786
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Xia Y, Qu S, Xiao Q, Wang ZX, Qu P, Chen L, Liu Z, Tian L, Huang Z, Zhang Y, Wang J. Palladium-Catalyzed Carbene Migratory Insertion Using Conjugated Ene–Yne–Ketones as Carbene Precursors. J Am Chem Soc 2013; 135:13502-11. [DOI: 10.1021/ja4058844] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ying Xia
- Beijing National Laboratory of Molecular
Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry
and Molecular Engineering of the Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Shuanglin Qu
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qing Xiao
- Beijing National Laboratory of Molecular
Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry
and Molecular Engineering of the Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Wang
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peiyuan Qu
- Beijing National Laboratory of Molecular
Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry
and Molecular Engineering of the Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Li Chen
- Beijing National Laboratory of Molecular
Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry
and Molecular Engineering of the Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhen Liu
- Beijing National Laboratory of Molecular
Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry
and Molecular Engineering of the Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Leiming Tian
- Beijing National Laboratory of Molecular
Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry
and Molecular Engineering of the Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhongxing Huang
- Beijing National Laboratory of Molecular
Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry
and Molecular Engineering of the Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Yan Zhang
- Beijing National Laboratory of Molecular
Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry
and Molecular Engineering of the Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular
Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry
and Molecular Engineering of the Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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787
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Lieou Kui E, Kanazawa A, Poisson JF, Py S. Unprecedented base-promoted nucleophilic addition of diazoesters to nitrones. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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788
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Kong Y, Zhang W, Tang M, Wang H. N-Alkylation of tosylhydrazones in the presence of triphenylphosphine. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.131] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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789
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Xia L, Lee YR. Efficient One-Pot Synthesis of Multi-Substituted Dihydrofurans by Ruthenium(II)-Catalyzed [3+2] Cycloaddition of Cyclic or Acyclic Diazodicarbonyl Compounds with Olefins. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300245] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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790
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Sha Q, Ling Y, Wang W, Wei Y. Capture ofIn SituGenerated Diazo Compounds or Copper Carbenoids by Triphenylphosphine: Selective Synthesis oftrans- Alkenes and Unsymmetric AzinesviaReaction of Aldehydes with Ketone-DerivedN-Tosylhydrazones. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300302] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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791
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Zhan M, Zhang S, Zhang WX, Xi Z. Diazo Compounds as Electrophiles To React with 1,4-Dilithio-1,3-dienes: Efficient Synthesis of 1-Imino-pyrrole Derivatives. Org Lett 2013; 15:4182-5. [DOI: 10.1021/ol401878q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Ming Zhan
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China
| | - Shaoguang Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China
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792
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Xiao Q, Wang B, Tian L, Yang Y, Ma J, Zhang Y, Chen S, Wang J. Palladium‐Catalyzed Three‐Component Reaction of Allenes, Aryl Iodides, and Diazo Compounds: Approach to 1,3‐Dienes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304327] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qing Xiao
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871 (China)
| | - Binglong Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021 (China)
| | - Leiming Tian
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871 (China)
| | - Yang Yang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871 (China)
| | - Jian Ma
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871 (China)
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871 (China)
| | - Shufeng Chen
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021 (China)
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871 (China)
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793
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Xiao Q, Wang B, Tian L, Yang Y, Ma J, Zhang Y, Chen S, Wang J. Palladium-catalyzed three-component reaction of allenes, aryl iodides, and diazo compounds: approach to 1,3-dienes. Angew Chem Int Ed Engl 2013; 52:9305-8. [PMID: 23857948 DOI: 10.1002/anie.201304327] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Qing Xiao
- Beijing National Laboratory of Molecular Sciences, College of Chemistry, Peking University, Beijing 100871, China
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794
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Zhou L, Liu Z, Liu Y, Zhang Y, Wang J. N-Tosylhydrazine-mediated deoxygenative hydrogenation of aldehydes and ketones catalyzed by Pd/C. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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795
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Florentino L, Aznar F, Valdés C. Synthesis of (Z)-N-Alkenylazoles and Pyrroloisoquinolines from α-N-Azoleketones through Pd-Catalyzed Tosylhydrazone Cross-Couplings. Chemistry 2013; 19:10506-10. [DOI: 10.1002/chem.201301057] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 05/23/2013] [Indexed: 11/11/2022]
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796
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Thomé I, Besson C, Kleine T, Bolm C. Base-catalyzed synthesis of substituted indazoles under mild, transition-metal-free conditions. Angew Chem Int Ed Engl 2013; 52:7509-13. [PMID: 23740864 DOI: 10.1002/anie.201300917] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 04/29/2013] [Indexed: 11/09/2022]
Abstract
Back to basics: A transition-metal-free method developed for the synthesis of indazoles involves an inexpensive catalytic system composed of a diamine and K2CO3. Various (Z)-2-bromoacetophenone tosylhydrazones were converted into indazoles at room temperature in excellent yields (see example; Ts = p-toluenesulfonyl). The yield was improved by photoisomerization with UV light when E/Z isomeric mixtures of the starting material were used.
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Affiliation(s)
- Isabelle Thomé
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
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797
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Thomé I, Besson C, Kleine T, Bolm C. Base-Catalyzed Synthesis of Substituted Indazoles under Mild, Transition-Metal-Free Conditions. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300917] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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798
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Zeng X, Cheng G, Shen J, Cui X. Palladium-Catalyzed Oxidative Cross-Coupling of N-Tosylhydrazones with Indoles: Synthesis of N-Vinylindoles. Org Lett 2013; 15:3022-5. [DOI: 10.1021/ol401217h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiaobao Zeng
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Xiamen Marine and Gene Drugs, Institutes of Molecular Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, China
| | - Guolin Cheng
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Xiamen Marine and Gene Drugs, Institutes of Molecular Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, China
| | - Jinhai Shen
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Xiamen Marine and Gene Drugs, Institutes of Molecular Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, China
| | - Xiuling Cui
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Xiamen Marine and Gene Drugs, Institutes of Molecular Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, China
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799
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Wang KB, Ran RQ, Xiu SD, Li CY. Synthesis of 3-Aza-bicyclo[3.1.0]hexan-2-one Derivatives via Gold-Catalyzed Oxidative Cyclopropanation of N-Allylynamides. Org Lett 2013; 15:2374-7. [PMID: 23651134 DOI: 10.1021/ol4007629] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Kai-Bing Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, China
| | - Rui-Qiao Ran
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, China
| | - Shi-Dong Xiu
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, China
| | - Chuan-Ying Li
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou 310018, China
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800
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Mao H, Lin A, Shi Y, Mao Z, Zhu X, Li W, Hu H, Cheng Y, Zhu C. Construction of Enantiomerically Enriched Diazo Compounds Using Diazo Esters as Nucleophiles: Chiral Lewis Base Catalysis. Angew Chem Int Ed Engl 2013; 52:6288-92. [DOI: 10.1002/anie.201301509] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Indexed: 11/08/2022]
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