1
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Gulia N, Fornalski J, Gumienna A, Ambroziak M, Szafert S. Temperature‐Controlled Selective Mono‐ vs. Di‐
ortho
‐Arylation for the Synthesis of Arylhydrazine Derivatives. Chemistry 2022; 28:e202202449. [DOI: 10.1002/chem.202202449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Nurbey Gulia
- Faculty of Chemistry University of Wrocław 14 F. Joliot-Curie 50–383 Wrocław Poland
| | - Jarosław Fornalski
- Faculty of Chemistry University of Wrocław 14 F. Joliot-Curie 50–383 Wrocław Poland
| | - Adrianna Gumienna
- Faculty of Chemistry University of Wrocław 14 F. Joliot-Curie 50–383 Wrocław Poland
| | - Małgorzata Ambroziak
- Faculty of Chemistry University of Wrocław 14 F. Joliot-Curie 50–383 Wrocław Poland
| | - Sławomir Szafert
- Faculty of Chemistry University of Wrocław 14 F. Joliot-Curie 50–383 Wrocław Poland
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2
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Kliemann MN, Teeuwen S, Weike C, Franciò G, Leitner W. Rhodium‐Catalyzed Asymmetric Hydrohydrazonemethylation of Styrenes: Access to Chiral Hydrazones, Hydrazides, Hydrazines and Amines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | | | | | - Walter Leitner
- Max-Planck-Institute for Chemical Energy Conversion GERMANY
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3
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Liu S, Tanabe Y, Kuriyama S, Sakata K, Nishibayashi Y. Ruthenium- and Copper-Catalyzed Propargylic Substitution Reactions of Propargylic Alcohol Derivatives with Hydrazones. Chemistry 2021; 27:15650-15659. [PMID: 34606139 DOI: 10.1002/chem.202103287] [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: 09/10/2021] [Indexed: 11/12/2022]
Abstract
Ruthenium- and copper-catalyzed propargylic substitution reactions of propargylic alcohol derivatives with N-monosubstituted hydrazones as ambident nucleophiles are achieved in which N-monosubstituted hydrazones exhibit impressive different reactivities depending on different catalytic systems, behaving as carbon-centered nucleophiles to give the corresponding propargylic alkylated products in ruthenium catalysis, or as nitrogen-centered nucleophiles to afford the corresponding propargylic aminated products in copper catalysis. DFT calculations were carried out to investigate the detailed reaction pathways of these two systems. Further transformation of propargylic substituted products affords the corresponding multisubstituted pyrazoles as cyclization products in good to high yields.
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Affiliation(s)
- Shiyao Liu
- Department of Applied Chemistry, School of Engineering, The University of Tokyo Hongo, Bunkyo-ku, Tokyo, Japan
| | - Yoshiaki Tanabe
- Department of Applied Chemistry, School of Engineering, The University of Tokyo Hongo, Bunkyo-ku, Tokyo, Japan
| | - Shogo Kuriyama
- Department of Applied Chemistry, School of Engineering, The University of Tokyo Hongo, Bunkyo-ku, Tokyo, Japan
| | - Ken Sakata
- Faculty of Pharmaceutical Sciences, Toho University Miyama, Funabashi, Chiba, Japan
| | - Yoshiaki Nishibayashi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo Hongo, Bunkyo-ku, Tokyo, Japan
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4
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Sonsona IG, Alegre-Requena JV, Marqués-López E, Gimeno MC, Herrera RP. Asymmetric Organocatalyzed Aza-Henry Reaction of Hydrazones: Experimental and Computational Studies. Chemistry 2020; 26:5469-5478. [PMID: 32012361 DOI: 10.1002/chem.202000232] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Indexed: 12/13/2022]
Abstract
The first asymmetric catalyzed aza-Henry reaction of hydrazones is presented. In this process, quinine was used as the catalyst to synthesize different alkyl substituted β-nitrohydrazides with ee up to 77 %. This ee was improved up to 94 % by a further recrystallization and the opposite enantiomer can be obtained by using quinidine as the catalyst, opening exciting possibilities in fields in which the control of chirality is vital, such as the pharmaceutical industry. Additionally, experimental and ab initio studies were performed to understand the reaction mechanism. The experimental results revealed an unexpected secondary kinetic isotope effect (KIE) that is explained by the calculated reaction pathway, which shows that the protonation of the initial hydrazone and the C-C bond forming reaction occur during a concerted process. This concerted mechanism makes the catalysis conceptually different to traditional base-promoted Henry and aza-Henry reactions.
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Affiliation(s)
- Isaac G Sonsona
- Laboratorio de Organocatálisis Asimétrica, Departamento de, Química Orgánica, Instituto de Síntesis Química y, Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, No. 12., 50009, Zaragoza, Spain
| | - Juan V Alegre-Requena
- Laboratorio de Organocatálisis Asimétrica, Departamento de, Química Orgánica, Instituto de Síntesis Química y, Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, No. 12., 50009, Zaragoza, Spain
| | - Eugenia Marqués-López
- Laboratorio de Organocatálisis Asimétrica, Departamento de, Química Orgánica, Instituto de Síntesis Química y, Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, No. 12., 50009, Zaragoza, Spain
| | - M Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de, Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de, Zaragoza, C/ Pedro Cerbuna, No. 12., 50009, Zaragoza, Spain
| | - Raquel P Herrera
- Laboratorio de Organocatálisis Asimétrica, Departamento de, Química Orgánica, Instituto de Síntesis Química y, Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, No. 12., 50009, Zaragoza, Spain
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5
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Wang K, Shi B, Wang Y, Wang J, Huang D, Su Y, Hu Y. Tin‐Mediated One‐Pot Preparation of β‐Trifluoromethyl‐β
‐
acylhydrazonyl Carbonyl Compounds. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201800693] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ke‐Hu Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University 967 Anning East Road Lanzhou 730070 P. R. China
| | - Baobao Shi
- College of Chemistry and Chemical EngineeringNorthwest Normal University 967 Anning East Road Lanzhou 730070 P. R. China
| | - Yalin Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University 967 Anning East Road Lanzhou 730070 P. R. China
| | - Jianglong Wang
- College of Chemistry and Chemical EngineeringNorthwest Normal University 967 Anning East Road Lanzhou 730070 P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical EngineeringNorthwest Normal University 967 Anning East Road Lanzhou 730070 P. R. China
| | - Yingpeng Su
- College of Chemistry and Chemical EngineeringNorthwest Normal University 967 Anning East Road Lanzhou 730070 P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical EngineeringNorthwest Normal University 967 Anning East Road Lanzhou 730070 P. R. China
- State Key Laboratory of Applied Organic ChemistryLanzhou University Lanzhou 730000 P. R.China
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6
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One‐Pot Catalytic Enantioselective Synthesis of 2‐Pyrazolines. Angew Chem Int Ed Engl 2019; 58:2469-2473. [DOI: 10.1002/anie.201811471] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/10/2018] [Indexed: 11/07/2022]
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7
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Thomson CJ, Barber DM, Dixon DJ. One-Pot Catalytic Enantioselective Synthesis of 2-Pyrazolines. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201811471] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Connor J. Thomson
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; Mansfield Road Oxford OX1 3TA UK
| | - David M. Barber
- Research & Development; Weed Control Chemistry, Bayer AG, Crop Science Division; Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Darren J. Dixon
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; Mansfield Road Oxford OX1 3TA UK
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8
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Kang QK, Selvakumar S, Arumugam N, Almansour AI, Kumar RS, Maruoka K. Enantioselective Alkylation of N-Arylhydrazones Derived from α-Keto Esters and Isatin Derivatives through Asymmetric Phase-Transfer Catalysis. Chem Asian J 2018; 13:1780-1783. [PMID: 29797495 DOI: 10.1002/asia.201800652] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 05/17/2018] [Indexed: 01/08/2023]
Abstract
The phase-transfer-catalyzed asymmetric alkylation reactions of N-arylhydrazones derived from α-keto-esters and isatin derivatives afford enantioenriched azo compounds that bear a tetra-substituted carbon stereocenter in good yields with high chemo- and enantioselectivity. The alkylation products can be readily converted into chiral amino esters, hydrazine derivatives, and aza-β-lactams without loss of enantiopurity.
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Affiliation(s)
- Qi-Kai Kang
- Laboratory of Synthetic Organic Chemistry and Special Laboratory of Organocatalytic Chemistry, Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
| | - Sermadurai Selvakumar
- Laboratory of Synthetic Organic Chemistry and Special Laboratory of Organocatalytic Chemistry, Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
| | - Natarajan Arumugam
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Abdulrahman I Almansour
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Raju Suresh Kumar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Keiji Maruoka
- Laboratory of Synthetic Organic Chemistry and Special Laboratory of Organocatalytic Chemistry, Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, No.100, West Waihuan Road, HEMC, Panyu District, Guangzhou, 510006, China
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9
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Prieto A, Bouyssi D, Monteiro N. Radical-Mediated Formal C(sp2
)-H Functionalization of Aldehyde-Derived N
,N
-Dialkylhydrazones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701600] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Alexis Prieto
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Univ Lyon; Université Claude Bernard Lyon 1; 69622 Villeurbanne France
| | - Didier Bouyssi
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Univ Lyon; Université Claude Bernard Lyon 1; 69622 Villeurbanne France
| | - Nuno Monteiro
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Univ Lyon; Université Claude Bernard Lyon 1; 69622 Villeurbanne France
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10
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de Gracia Retamosa M, Matador E, Monge D, Lassaletta JM, Fernández R. Hydrazones as Singular Reagents in Asymmetric Organocatalysis. Chemistry 2016; 22:13430-45. [DOI: 10.1002/chem.201602430] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Indexed: 01/01/2023]
Affiliation(s)
- María de Gracia Retamosa
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Avda. Américo Vespucio, 49 41092 Sevilla Spain)
| | - Esteban Matador
- Departamento de Química Orgánica; Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA); C/Prof. García González, 1 41012 Sevilla Spain
| | - David Monge
- Departamento de Química Orgánica; Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA); C/Prof. García González, 1 41012 Sevilla Spain
| | - José M. Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Avda. Américo Vespucio, 49 41092 Sevilla Spain)
| | - Rosario Fernández
- Departamento de Química Orgánica; Universidad de Sevilla and Centro de Innovación Avanzada (ORFEO-CINQA); C/Prof. García González, 1 41012 Sevilla Spain
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11
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Gao S, Chen J, Hu X, Cheng H, Lu L, Xiao W. Copper‐Catalyzed Enantioselective Inverse Electron‐Demand Hetero‐Diels–Alder Reactions of Diazadienes with Enol Ethers: Efficient Synthesis of Chiral Pyridazines. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300723] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shuang Gao
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, People's Republic of China and Collaborative Center of Chemical Science and Engineering (Tianjin), People's Republic of China, Fax: (+86)‐27‐6786‐2041; phone: (+86)‐27‐67862041
| | - Jia‐Rong Chen
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, People's Republic of China and Collaborative Center of Chemical Science and Engineering (Tianjin), People's Republic of China, Fax: (+86)‐27‐6786‐2041; phone: (+86)‐27‐67862041
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, 693 Xiongchu Road, Wuhan, Hubei 430079, People's Republic China
| | - Xiao‐Qiang Hu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, People's Republic of China and Collaborative Center of Chemical Science and Engineering (Tianjin), People's Republic of China, Fax: (+86)‐27‐6786‐2041; phone: (+86)‐27‐67862041
| | - Hong‐Gang Cheng
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, People's Republic of China and Collaborative Center of Chemical Science and Engineering (Tianjin), People's Republic of China, Fax: (+86)‐27‐6786‐2041; phone: (+86)‐27‐67862041
| | - Liang‐Qiu Lu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, People's Republic of China and Collaborative Center of Chemical Science and Engineering (Tianjin), People's Republic of China, Fax: (+86)‐27‐6786‐2041; phone: (+86)‐27‐67862041
| | - Wen‐Jing Xiao
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, People's Republic of China and Collaborative Center of Chemical Science and Engineering (Tianjin), People's Republic of China, Fax: (+86)‐27‐6786‐2041; phone: (+86)‐27‐67862041
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12
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Montavon TJ, Türkmen YE, Shamsi NA, Miller C, Sumaria CS, Rawal VH, Kozmin SA. [2+2+2] Cycloadditions of siloxy alkynes with 1,2-diazines: from reaction discovery to identification of an antiglycolytic chemotype. Angew Chem Int Ed Engl 2013; 52:13576-9. [PMID: 24346942 DOI: 10.1002/anie.201305711] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 09/13/2013] [Indexed: 11/10/2022]
Abstract
Cycloaddition uncovered: The title reaction produces novel polycyclic compounds with high efficiency and excellent diastereoselectivity under mild reaction conditions. A small-molecule library, synthesized using this reaction, yielded a novel chemotype which inhibited glycolytic ATP production by blocking glucose uptake in CHO-K1 cells. DMF=N,N-dimethylformamide, Tf=trifluoromethanesulfonyl, TIPS=triisopropylsilyl.
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Affiliation(s)
- Timothy J Montavon
- Chicago Tri-Institutional Center for Chemical Methods and Library Development, Department of Chemistry, The University of Chicago, Chicago, IL 60637 (USA)
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13
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Montavon TJ, Türkmen YE, Shamsi NA, Miller C, Sumaria CS, Rawal VH, Kozmin SA. [2+2+2] Cycloadditions of Siloxy Alkynes with 1,2-Diazines: From Reaction Discovery to Identification of an Antiglycolytic Chemotype. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305711] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Fukumoto Y, Ohmae A, Hirano M, Chatani N. Rhodium-Catalyzed Anti-Markovnikov Hydrohydrazination of Terminal Alkynes withN-Alkyl- andN,N-Dialkylhydrazines. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300188] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Xu X, Zavalij PY, Doyle MP. Synthesis of tetrahydropyridazines by a metal-carbene-directed enantioselective vinylogous N-H insertion/Lewis acid-catalyzed diastereoselective Mannich addition. Angew Chem Int Ed Engl 2012; 51:9829-33. [PMID: 22945294 PMCID: PMC3517037 DOI: 10.1002/anie.201203962] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 07/03/2012] [Indexed: 11/10/2022]
Abstract
A versatile cascade of reactions, triggered by Rh(II)-catalyzed diazo decomposition followed by a vinylogous N-H insertion/Lewis acid catalyzed Mannich addition, that produces highly substituted 1,2,3,6-tetrahydropyridazines in up to 97 % ee with high yield and diastereocontrol has been developed.
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Affiliation(s)
- Xinfang Xu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, Fax: (+11) 301-314-2779
| | - Peter Y. Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, Fax: (+11) 301-314-2779
| | - Michael P. Doyle
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, Fax: (+11) 301-314-2779
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16
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Xu X, Zavalij PY, Doyle MP. Synthesis of Tetrahydropyridazines by a Metal-Carbene-Directed Enantioselective Vinylogous NH Insertion/Lewis Acid-Catalyzed Diastereoselective Mannich Addition. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203962] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Zamfir A, Schenker S, Bauer W, Clark T, Tsogoeva SB. Silicon Lewis Acid Catalyzed [3+2] Cycloaddition Reactions of Hydrazones/Cyclopentadiene: Mild Access to Pyrazolidine Derivatives. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100206] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Attanasi OA, Berretta S, De Crescentini L, Favi G, Giorgi G, Mantellini F, Nicolini S. Zinc(II) Triflate-Catalyzed Divergent Synthesis of Polyfunctionalized Pyrroles. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201000796] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Hong JT, Wang X, Kim JH, Kim K, Yun H, Jang HY. Platinum(II)-Catalyzed Allylation of CO and CN Bonds under Hydrogenation Conditions. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000648] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Nugent T, El-Shazly M. Chiral Amine Synthesis - Recent Developments and Trends for Enamide Reduction, Reductive Amination, and Imine Reduction. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900719] [Citation(s) in RCA: 722] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Chakrabarti A, Konishi H, Yamaguchi M, Schneider U, Kobayashi S. Indium(I)-Catalyzed Asymmetric Allylation, Crotylation, and α-Chloroallylation of Hydrazones with Rare Constitutional and High Configurational Selectivities. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906308] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Chakrabarti A, Konishi H, Yamaguchi M, Schneider U, Kobayashi S. Indium(I)-Catalyzed Asymmetric Allylation, Crotylation, and α-Chloroallylation of Hydrazones with Rare Constitutional and High Configurational Selectivities. Angew Chem Int Ed Engl 2010; 49:1838-41. [DOI: 10.1002/anie.200906308] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Attanasi O, Berretta S, De Crescentini L, Favi G, Giorgi G, Mantellini F. Lewis Acid-Catalyzed Synthesis of Functionalized Pyrroles. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200800807] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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Yalalov D, Tsogoeva S, Shubina T, Martynova I, Clark T. Evidence for an Enol Mechanism in a Highly Enantioselective Mannich-Type Reaction Catalyzed by Primary Amine-Thiourea. Angew Chem Int Ed Engl 2008; 47:6624-8. [DOI: 10.1002/anie.200800849] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Yalalov D, Tsogoeva S, Shubina T, Martynova I, Clark T. Evidence for an Enol Mechanism in a Highly Enantioselective Mannich-Type Reaction Catalyzed by Primary Amine-Thiourea. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800849] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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Nakamura S, Nakashima H, Sugimoto H, Sano H, Hattori M, Shibata N, Toru T. Enantioselective CC Bond Formation to Sulfonylimines through Use of the 2-Pyridinesulfonyl Group as a Novel Stereocontroller. Chemistry 2008; 14:2145-52. [DOI: 10.1002/chem.200701425] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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29
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Levrand B, Fieber W, Lehn JM, Herrmann A. Controlled Release of Volatile Aldehydes and Ketones from Dynamic Mixtures Generated by Reversible Hydrazone Formation. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790237] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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30
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Hamada T, Manabe K, Kobayashi S. Catalytic Asymmetric Mannich-Type Reactions Activated by ZnF2 Chiral Diamine in Aqueous Media. Chemistry 2006; 12:1205-15. [PMID: 16267871 DOI: 10.1002/chem.200500673] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Catalytic asymmetric Mannich-type reactions of an alpha-hydrazono ester with silicon enolates in aqueous media have been developed by using ZnF2 and chiral diamines as catalysts. In these reactions, both Zn2+ and a fluoride anion were necessary to achieve high yields and enantioselectivities, suggesting a double activation mechanism, in which Zn2+ activates the alpha-hydrazono ester and the fluoride anion simultaneously activates the silicon enolate. When chiral diamine ligands bearing methoxy-substituted aromatic rings were employed, the reactions in aqueous THF were markedly accelerated. Furthermore, the use of these diamines facilitated the asymmetric Mannich-type reactions in water without any organic cosolvents. It is noteworthy that either syn or anti adducts were stereospecifically obtained from (E)- or (Z)-silicon enolates, respectively. Interestingly, these reactions proceeded smoothly only in the presence of water. On the basis of several experimental results, it can be concluded that the reaction mechanism is likely to be a fluoride-catalyzed one, in which the ZnF2 chiral diamine complex is regenerated from the Me3SiF formed during the reaction.
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Affiliation(s)
- Tomoaki Hamada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, The HFRE Division, ERATO, Japan Science and Technology Agency (JST), Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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