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Liu Y, Wang Z, Zhao Z, Gao P, Ma N, Liu Q. Efficient base-free hydrodehalogenation of organic halides catalyzed by a well-defined diphosphine-ruthenium(II) complex. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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2
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Darbem MP, Esteves HA, Oliveira IM, Stefani HA. α,β‐Unsaturated 2‐Ketoglycosides via Pd‐Catalyzed Carbonylative Heck Reaction of 2‐Iodoglycals. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000846] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mariana P. Darbem
- Departamento de Farmácia Faculdade de Ciências Farmacêuticas Universidade de São Paulo Av. Prof. Lineu Prestes, 580 05508‐000 São Paulo Brazil
| | - Henrique A. Esteves
- Departamento de Química Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes, 748 05508‐000 São Paulo Brazil
| | - Isadora M. Oliveira
- Departamento de Química Fundamental Instituto de Química Universidade de São Paulo Av. Prof. Lineu Prestes, 748 05508‐000 São Paulo Brazil
| | - Hélio A. Stefani
- Departamento de Farmácia Faculdade de Ciências Farmacêuticas Universidade de São Paulo Av. Prof. Lineu Prestes, 580 05508‐000 São Paulo Brazil
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3
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Onodera S, Kochi T, Kakiuchi F. Synthesis of N-Arylpyrazoles by Palladium-Catalyzed Coupling of Aryl Triflates with Pyrazole Derivatives. J Org Chem 2019; 84:6508-6515. [PMID: 31026163 DOI: 10.1021/acs.joc.9b00673] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A method for the synthesis of N-arylpyrazoles by palladium-catalyzed coupling of aryl triflates with pyrazole derivatives is described. Using tBuBrettPhos as a ligand, the palladium-catalyzed C-N coupling of a variety of aryl triflates including ortho-substituted ones with pyrazole derivatives proceeded efficiently to give N-arylpyrazole products in high yields. 3-Trimethylsilylpyrazole was found to be an excellent pyrazole substrate for the coupling, and the corresponding product, 1-aryl-3-trimethylsilylpyrazole, also served as a great template for the syntheses of N-arylpyrazole derivatives, as demonstrated by regioselective halogenation at the 3-, 4-, and 5-positions of the pyrazole ring.
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Affiliation(s)
- Shunsuke Onodera
- Department of Chemistry , Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi , Kohoku-ku, Yokohama , Kanagawa 223-8522 , Japan
| | - Takuya Kochi
- Department of Chemistry , Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi , Kohoku-ku, Yokohama , Kanagawa 223-8522 , Japan
| | - Fumitoshi Kakiuchi
- Department of Chemistry , Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi , Kohoku-ku, Yokohama , Kanagawa 223-8522 , Japan
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Wang Y, Zhang B, Zheng Y, Ma Q, Sui Q, Lei X. Practical and scalable preparation of Minodronic acid and Zolpidem from 2-chloroimidazole[1,2-a]pyridines. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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5
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Voronin VV, Ledovskaya MS, Gordeev EG, Rodygin KS, Ananikov VP. [3 + 2]-Cycloaddition of in Situ Generated Nitrile Imines and Acetylene for Assembling of 1,3-Disubstituted Pyrazoles with Quantitative Deuterium Labeling. J Org Chem 2018; 83:3819-3828. [DOI: 10.1021/acs.joc.8b00155] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Vladimir V. Voronin
- Saint Petersburg State University, Universitetsky prospect 26, Peterhof 198504, Russia
| | - Maria S. Ledovskaya
- Saint Petersburg State University, Universitetsky prospect 26, Peterhof 198504, Russia
| | - Evgeniy G. Gordeev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect 47, Moscow,119991, Russia
| | - Konstantin S. Rodygin
- Saint Petersburg State University, Universitetsky prospect 26, Peterhof 198504, Russia
| | - Valentine P. Ananikov
- Saint Petersburg State University, Universitetsky prospect 26, Peterhof 198504, Russia
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect 47, Moscow,119991, Russia
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Wang Z, Ma Z, Yang Y, Liang M, Huang W, Shen Z. Palladium-Catalyzed Dehalogenation of Benzofuran Bromides. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2014.987351] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Zunyuan Wang
- Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang, China
| | - Zhen Ma
- Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang, China
| | - Yewei Yang
- Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang, China
| | - Meihao Liang
- Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang, China
| | - Wenhai Huang
- Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang, China
| | - Zhengrong Shen
- Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang, China
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Effects of solvent and base on the palladium-catalyzed amination: PdCl2(Ph3P)2/Ph3P-catalyzed selective arylation of primary anilines with aryl bromides. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.048] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Hwang JY, Kim HY, Park DS, Choi J, Baek SM, Kim K, Kim S, Seong S, Choi I, Lee HG, Windisch MP, Lee J. Identification of a series of 1,3,4-trisubstituted pyrazoles as novel hepatitis C virus entry inhibitors. Bioorg Med Chem Lett 2013; 23:6467-73. [PMID: 24125883 DOI: 10.1016/j.bmcl.2013.09.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 08/20/2013] [Accepted: 09/12/2013] [Indexed: 12/24/2022]
Abstract
In this report we describe the identification of novel pyrazole analogs as potent hepatitis C virus (HCV) entry inhibitor. The pyrazoles were identified by our phenotypic high-throughput screening using infectious HCV. A series of pyrazole derivatives was synthesized and evaluated for inhibitory activity against HCV in the infectious cell culture system. Through evaluation of selected compounds we observed that the pyrazoles did not interfere with HCV RNA replication but with viral entry as shown by experiments with HCV replicons and HCV pseudo particles, respectively.
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Affiliation(s)
- Jong Yeon Hwang
- Medicinal Chemistry Group, Institut Pasteur Korea (IP-K), Sampyeong-dong 696, Bundang-gu, Seongnam-si, Gyeonggi-do 463-400, Republic of Korea
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Panda N, Jena AK. Fe-catalyzed one-pot synthesis of 1,3-di- and 1,3,5-trisubstituted pyrazoles from hydrazones and vicinal diols. J Org Chem 2012; 77:9401-6. [PMID: 22998610 DOI: 10.1021/jo301770k] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
An iron-catalyzed route for the regioselective synthesis of 1,3- and 1,3,5-substituted pyrazoles from the reaction of diarylhydrazones and vicinal diols has been developed. This method was found to be practical with wide substrate scope.
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Affiliation(s)
- Niranjan Panda
- Department of Chemistry, National Institute of Technology, Rourkela-769008 Odisha, India.
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Affiliation(s)
- Yves L. Janin
- Institut Pasteur, Laboratoire de Chimie Médicinale, Département
de
Biologie Structurale et Chimie, 28 rue du Dr. Roux, 75724 Paris Cedex
15, France
- CNRS, UMR 3523, 28 rue du Dr. Roux, 75724 Paris Cedex
15, France
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