1
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Wang L, Zhou Y, Su Z, Zhang F, Cao W, Liu X, Feng X. [3,3]-Sigmatropic Rearrangements of Naphthyl 1-Propargyl Ethers: para-Propargylation and Catalytic Asymmetric Dearomatization. Angew Chem Int Ed Engl 2022; 61:e202211785. [PMID: 36317655 DOI: 10.1002/anie.202211785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Indexed: 11/06/2022]
Abstract
The para-Claisen rearrangement of aryl 1-propargyl ethers involves two-step [3,3]-sigmatropic rearrangements and dearomatization process, which has high activation barriers and is of challenge. Here we discovered thermal para-Claisen rearrangement of naphthyl 1-propargyl ethers, and it enabled the formation of formal para-C-H propargylation products upon rearomatization. Chirality transfer occurred if optically active propargyl ethers were employed, leading to the construction of aryl/propargyl-containing stereogenic centers. Moreover, catalytic asymmetric dearomatization of naphthyl 1-propargyl ethers with different substitution at para-position gave access to benzocyclohexenones bearing all-carbon quaternary stereocenters. The reaction was accelerated by a chiral N,N'-dioxide/Co(OTf)2 complex catalyst to achieve high yields (up to 98 %) and high enantioselectivities (up to 93 % ee). The DFT calculations and experimental results provided important clues to clarify the para-Claisen rearrangement process as well as the chiral induction and remote delivery.
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Affiliation(s)
- Lifeng Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Fengcai Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Weidi Cao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
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2
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Wang L, Zhou Y, Su Z, Zhang F, Cao W, Liu X, Feng X. [3,3]‐Sigmatropic Rearrangements of Naphthyl 1‐Propargyl Ethers:
para
‐Propargylation and Catalytic Asymmetric Dearomatization. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Lifeng Wang
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Fengcai Zhang
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Weidi Cao
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
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3
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Nale SD, Thombal RS, Lee YR. Ruthenium(II)‐Catalyzed Direct
Ortho
Functionalization of 1‐Arylpyrazoles with Maleimides: A Condition Controlled Installation of Succinimides and Maleimides on Arenes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100211] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Sagar D. Nale
- School of Chemical Engineering Yeungnam University Gyeongsan 38541 Republic of Korea
| | - Raju S. Thombal
- School of Chemical Engineering Yeungnam University Gyeongsan 38541 Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering Yeungnam University Gyeongsan 38541 Republic of Korea
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4
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Shi X, Sosa Carrizo ED, Cordier M, Roger J, Pirio N, Hierso JC, Fleurat-Lessard P, Soulé JF, Doucet H. C-H Bond Arylation of Pyrazoles at the β-Position: General Conditions and Computational Elucidation for a High Regioselectivity. Chemistry 2021; 27:5546-5554. [PMID: 33624911 DOI: 10.1002/chem.202100031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Indexed: 12/11/2022]
Abstract
Direct arylation of most five-membered ring heterocycles are generally easily accessible and strongly favored at the α-position using classical palladium-catalysis. Conversely, regioselective functionalization of such heterocycles at the concurrent β-position remains currently very challenging. Herein, we report general conditions for regioselective direct arylation at the β-position of pyrazoles, while C-H α-position is free. By using aryl bromides as the aryl source and a judicious choice of solvent, the arylation reaction of variously N-substituted pyrazoles simply proceeds via β-C-H bond functionalization. The β-regioselectivity is promoted by a ligand-free palladium catalyst and a simple base without oxidant or further additive, and tolerates a variety of substituents on the bromoarene. DFT calculations revealed that a protic solvent such as 2-ethoxyethan-1-ol significantly enhances the acidity of the proton at β-position of the pyrazoles and thus favors this direct β-C-H bond arylation. This selective pyrazoles β-C-H bond arylation was successfully applied for the straightforward building of π-extended poly(hetero)aromatic structures via further Pd-catalyzed combined α-C-H intermolecular and intramolecular C-H bond arylation in an overall highly atom-economical process.
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Affiliation(s)
- Xinzhe Shi
- Univ Rennes, CNRS ISCR-UMR 6226, 35000, Rennes, France
| | - E Daiann Sosa Carrizo
- Université de Bourgogne, Institut de Chimie Moléculaire de, l'Université de Bourgogne, UMR CNRS 6302, Université, Bourgogne Franche-Comté (UBFC), 9 avenue Alain Savary, 21078, Dijon, France
| | - Marie Cordier
- Univ Rennes, CNRS ISCR-UMR 6226, 35000, Rennes, France
| | - Julien Roger
- Université de Bourgogne, Institut de Chimie Moléculaire de, l'Université de Bourgogne, UMR CNRS 6302, Université, Bourgogne Franche-Comté (UBFC), 9 avenue Alain Savary, 21078, Dijon, France
| | - Nadine Pirio
- Université de Bourgogne, Institut de Chimie Moléculaire de, l'Université de Bourgogne, UMR CNRS 6302, Université, Bourgogne Franche-Comté (UBFC), 9 avenue Alain Savary, 21078, Dijon, France
| | - Jean-Cyrille Hierso
- Université de Bourgogne, Institut de Chimie Moléculaire de, l'Université de Bourgogne, UMR CNRS 6302, Université, Bourgogne Franche-Comté (UBFC), 9 avenue Alain Savary, 21078, Dijon, France
| | - Paul Fleurat-Lessard
- Université de Bourgogne, Institut de Chimie Moléculaire de, l'Université de Bourgogne, UMR CNRS 6302, Université, Bourgogne Franche-Comté (UBFC), 9 avenue Alain Savary, 21078, Dijon, France
| | | | - Henri Doucet
- Univ Rennes, CNRS ISCR-UMR 6226, 35000, Rennes, France
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5
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Li D, Qiu S, Chen Y, Wu L. K
2
CO
3
‐Promoted Pyrazoles Synthesis from 1,3‐Dipolar Cycloaddition of
N
‐Tosylhydrazones with Acetylene Gas. ChemistrySelect 2020. [DOI: 10.1002/slct.202003067] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Dongying Li
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education Hainan Normal University No.99, Longkun South Road Haikou 571158 P. R. China
| | - Shanguang Qiu
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education Hainan Normal University No.99, Longkun South Road Haikou 571158 P. R. China
| | - Yuxue Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education Hainan Normal University No.99, Longkun South Road Haikou 571158 P. R. China
| | - Luyong Wu
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education Hainan Normal University No.99, Longkun South Road Haikou 571158 P. R. China
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6
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Dong S, Fu X, Xu X. [3+2]‐Cycloaddition of Catalytically Generated Pyridinium Ylide: A General Access to Indolizine Derivatives. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000276] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shanliang Dong
- College of ChemistryChemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Xiang Fu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug DiscoverySchool of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Xinfang Xu
- College of ChemistryChemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug DiscoverySchool of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
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7
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Xu Y, Lv G, Yan K, He H, Li J, Luo Y, Lai R, Hai L, Wu Y. Blue Light-promoted Carbene Transfer Reactions of Tosylhydrazones. Chem Asian J 2020; 15:1945-1947. [PMID: 32427419 DOI: 10.1002/asia.202000378] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/19/2020] [Indexed: 01/13/2023]
Abstract
Metal-free photochemical carbene-transfer reactions of tosylhydrazones were developed under blue light irradiation at room temperature. This reaction constructs C-X (X=C, N, O, S) bonds and cyclopropanes from readily available and stable starting materials.
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Affiliation(s)
- Yingying Xu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Guanghui Lv
- Department of Pharmacy, Taihe Hospital, Hubei University of Medicine, No. 32 South Renmin Road, Huibei, Shiyan, 442000, China
| | - Kaichuan Yan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Hua He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Jianglian Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yi Luo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Ruizhi Lai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Li Hai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yong Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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8
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Neto JSS, Zeni G. Alkynes and Nitrogen Compounds: Useful Substrates for the Synthesis of Pyrazoles. Chemistry 2020; 26:8175-8189. [PMID: 31990413 DOI: 10.1002/chem.201905276] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/24/2020] [Indexed: 02/06/2023]
Abstract
The easy preparation and functionalization of pyrazoles associated with their innumerable biological properties have made this class of N-heterocycles very attractive for the development of new synthetic routes and applications. The cyclization reactions of alkynes and nitrogen compounds represent a powerful tool for the preparation of pyrazoles. This Review covers the recent advances in the preparation of pyrazoles by reacting alkynes and nitrogen compounds under transition-metal-catalyzed or metal-free conditions.
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Affiliation(s)
- Jose S S Neto
- Department of Biochemistry and Molecular Biology Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Gilson Zeni
- Department of Biochemistry and Molecular Biology Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
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9
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Flynn AJ, Ford A, Khandavilli UBR, Lawrence SE, Maguire AR. Regioselective Thermal [3+2]-Dipolar Cycloadditions of α-Diazoacetates with α
-Sulfenyl/Sulfinyl/Sulfonyl-β
-Chloroacrylamide Derivatives to Form Densely Functionalised Pyrazoles. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900494] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Aaran J. Flynn
- School of Chemistry; Analytical and Biological Chemistry Research Facility; Synthesis and Solid State Pharmaceutical Centre; University College Cork; Cork Ireland
| | - Alan Ford
- School of Chemistry; Analytical and Biological Chemistry Research Facility; University College Cork; Cork Ireland
| | - U. B. Rao Khandavilli
- School of Chemistry; Analytical and Biological Chemistry Research Facility; Synthesis and Solid State Pharmaceutical Centre; University College Cork; Cork Ireland
| | - Simon E. Lawrence
- School of Chemistry; Analytical and Biological Chemistry Research Facility; Synthesis and Solid State Pharmaceutical Centre; University College Cork; Cork Ireland
| | - Anita R. Maguire
- School of Chemistry and School of Pharmacy; Analytical and Biological Chemistry Research Facility; Synthesis and Solid State Pharmaceutical Centre; University College Cork; Cork Ireland
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10
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Arunprasath D, Devi Bala B, Sekar G. Luxury of
N
‐Tosylhydrazones in Transition‐Metal‐Free Transformations. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801031] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dhanarajan Arunprasath
- Department of ChemistryIndian Institute of Technology Madras Chennai – 600036 Tamil Nadu India
| | | | - Govindasamy Sekar
- Department of ChemistryIndian Institute of Technology Madras Chennai – 600036 Tamil Nadu India
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11
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Remy R, Bochet CG. Application of Photoclick Chemistry for the Synthesis of Pyrazoles via 1,3-Dipolar Cycloaddition between Alkynes and Nitrilimines Generated In Situ. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701225] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Richard Remy
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 CH-1700 Fribourg Switzerland
| | - Christian G. Bochet
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 CH-1700 Fribourg Switzerland
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12
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Zheng Y, Qiu L, Hong K, Dong S, Xu X. Copper- or Thermally Induced Divergent Outcomes: Synthesis of 4-Methyl 2H
-Chromenes and Spiro-4H
-Pyrazoles. Chemistry 2017; 24:6705-6711. [DOI: 10.1002/chem.201704759] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Yang Zheng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of, Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P.R. China
| | - Lihua Qiu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of, Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P.R. China
| | - Kemiao Hong
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of, Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P.R. China
| | - Shanliang Dong
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of, Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P.R. China
| | - Xinfang Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of, Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P.R. China
- State Key Laboratory of Elemento-organic Chemistry; Nankai University; Tianjin 300071 P.R. China
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13
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Ahamad S, Kant R, Mohanan K. Three-Component Domino HWE Olefination/1,3-Dipolar Cycloaddition/Oxidation Strategy for the Rapid Synthesis of Trisubstituted Pyrazoles. ChemistrySelect 2016. [DOI: 10.1002/slct.201601113] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Shakir Ahamad
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
| | - Ruchir Kant
- Molecular and Structural Biology; CSIR-Central Drug Research Institute; Lucknow 226031 India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
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14
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Hunter AC, Schlitzer SC, Sharma I. Synergistic Diazo-OH Insertion/Conia-Ene Cascade Catalysis for the Stereoselective Synthesis ofγ-Butyrolactones and Tetrahydrofurans. Chemistry 2016; 22:16062-16065. [DOI: 10.1002/chem.201603934] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Arianne C. Hunter
- Department of Chemistry and Biochemistry, and; Institute of Natural Products Applications and Research Technologies; University of Oklahoma; 101 Stephenson Parkway Norman OK 73071 USA
| | - Steven C. Schlitzer
- Department of Chemistry and Biochemistry, and; Institute of Natural Products Applications and Research Technologies; University of Oklahoma; 101 Stephenson Parkway Norman OK 73071 USA
| | - Indrajeet Sharma
- Department of Chemistry and Biochemistry, and; Institute of Natural Products Applications and Research Technologies; University of Oklahoma; 101 Stephenson Parkway Norman OK 73071 USA
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15
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Kiyokawa K, Ito Y, Kakehi R, Ogawa T, Goto Y, Yoshimatsu M. Propargyl Hydrazides as Useful Intermediates Leading to Pyrazoles via Reaction with Certain Electrophiles. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600708] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Kosuke Kiyokawa
- Department of Chemistry; Faculty of Education; Gifu University; Yanagido 1-1 501-1193 Gifu Japan
| | - Yukiteru Ito
- Department of Chemistry; Faculty of Education; Gifu University; Yanagido 1-1 501-1193 Gifu Japan
| | - Ryoma Kakehi
- Department of Chemistry; Faculty of Education; Gifu University; Yanagido 1-1 501-1193 Gifu Japan
| | - Takahiro Ogawa
- Department of Chemistry; Faculty of Education; Gifu University; Yanagido 1-1 501-1193 Gifu Japan
| | - Yusuke Goto
- Department of Chemistry; Faculty of Education; Gifu University; Yanagido 1-1 501-1193 Gifu Japan
| | - Mitsuhiro Yoshimatsu
- Department of Chemistry; Faculty of Education; Gifu University; Yanagido 1-1 501-1193 Gifu Japan
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16
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Vila C, Amr FI, Blay G, Muñoz MC, Pedro JR. Organocatalytic Enantioselective Synthesis of Pyrazoles Bearing a Quaternary Stereocenter. Chem Asian J 2016; 11:1532-6. [DOI: 10.1002/asia.201600325] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Carlos Vila
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
| | - Fares Ibrahim Amr
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
| | - Gonzalo Blay
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
| | - M. Carmen Muñoz
- Departament de Física Aplicada; Universitat Politècnica de València; Camino de Vera s/n 46022 València Spain
| | - José R. Pedro
- Departament de Química Orgànica; Facultat de Química; Universitat de València; Dr. Moliner 59 46100 Burjassot, València Spain
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17
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Haydl AM, Hilpert LJ, Breit B. Regioconvergent and Enantioselective Rhodium-Catalyzed Hydroamination of Internal and Terminal Alkynes: A Highly Flexible Access to Chiral Pyrazoles. Chemistry 2016; 22:6547-51. [DOI: 10.1002/chem.201601198] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Alexander M. Haydl
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Lukas J. Hilpert
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Bernhard Breit
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstrasse 21 79104 Freiburg im Breisgau Germany
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18
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Plaza M, Pérez-Aguilar MC, Valdés C. Stereoselective Csp3-Csp2Bond-Forming Reactions by Transition-Metal-Free Reductive Coupling of Cyclic Tosylhydrazones with Boronic Acids. Chemistry 2016; 22:6253-7. [DOI: 10.1002/chem.201600837] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Manuel Plaza
- Departamento de Química Orgánica e Inorgánica and Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; c/Julián Clavería 8 Oviedo 33006 Spain
| | - M. Carmen Pérez-Aguilar
- Departamento de Química Orgánica e Inorgánica and Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; c/Julián Clavería 8 Oviedo 33006 Spain
| | - Carlos Valdés
- Departamento de Química Orgánica e Inorgánica and Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; c/Julián Clavería 8 Oviedo 33006 Spain
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