1
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Sreenivas K, Rao CN, Khan FA. Intramolecular CH-Hydrogen Bonding During the Dissociation of the Oxaphosphetane Intermediate Facilitates Z/E-Selectivity in Wittig Olefination. ChemistryOpen 2024; 13:e202300171. [PMID: 38060831 PMCID: PMC10924042 DOI: 10.1002/open.202300171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/25/2023] [Indexed: 03/10/2024] Open
Abstract
Herein, DFT studies corroborating experimental results revealed that the shortest intramolecular hydrogen bonding distance of cis/trans-oxaphosphetane (OPA) oxygen with the CH-hydrogen of a triphenylphosphine phenyl ring provides good evidence for the attained olefin Z/E-selectivity in Wittig olefination of the studied examples. 2-Nitrobenzaldehyde, 3-nitrobenzaldehyde, 2-nitro-3-bromobenzaldehyde, 2-nitro-5-bromobenzaldehyde and 2-nitro-5-arylbenzaldehydes provided Z-nitrostilbenes with (2-chloro-4-hydroxy-3-methoxy-5-(methoxycarbonyl)benzyl) triphenylphosphonium chloride as the major products. However, 4-nitrobenzaldehyde and 2-nitro-6-bromobenzaldehydes furnished E-nitrostilbenes as the major products in high yields. Furthermore, the DFT computed intramolecular CH1/CH2-hydrogen bond distances with Cl/NO2 of selected stilbene derivatives were in good agreement with intramolecular hydrogen bond distances measured from single-crystal X-ray diffraction measurements.
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Affiliation(s)
- Kukkamudi Sreenivas
- Department of ChemistryIndian Institute of Technology Hyderabad KandiSangareddyTelangana502 285India
| | - Chintada Nageswara Rao
- Department of Drug Discovery and Biomedical Sciences, College of PharmacyUniversity of South CarolinaColumbiaSC-29208USA
| | - Faiz Ahmed Khan
- Department of ChemistryIndian Institute of Technology Hyderabad, KandiSangareddyTelangana502 285India
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2
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Balcerzak L, Surowiak AK, Adamowicz A, Kaleta M, Pieńkosz-Żagan A, Strub DJ. Evaluation of small combinatorial libraries of nitrogenous low-molecular-weight compounds for new fragrance development. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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3
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Fang F, Jiang S, Lei H, Chen S, Deng GJ. Three-Component Synthesis of Dibenzoxazepinamines and Dibenzothiazepinamines under Transition-Metal-Free Conditions. J Org Chem 2021; 86:15658-15664. [PMID: 34676753 DOI: 10.1021/acs.joc.1c02229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A convenient and efficient strategy for the synthesis of dibenzoxazepinamines and dibenzothiazepinamines has been developed. This three-component approach started from 2-nitrobenzaldehydes, 2-aminophenols, and methoxyammonium chlorides under metal-free conditions. The protocol has the advantages of readily available starting materials, simple and facile conditions, gram-scale synthesis, and broad substrate scope, providing an efficient and practical strategy for the preparation of potential drug-active dibenzoxazepinamines and dibenzothiazepinamines in one pot.
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Affiliation(s)
- Fang Fang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.,College of Materials and Chemical Engineering, Hunan City University, Yiyang 413000, China
| | - Shuxin Jiang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Hanwen Lei
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Shanping Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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4
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Li J, Qin Z, Zhang C, Zhang Y, Wen C. Copper‐catalyzed C‐H Bis‐nitration of 1‐Naphthylamide Derivatives with tert‐Butyl Nitrite as Nitro Source. ChemistrySelect 2019. [DOI: 10.1002/slct.201901177] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jizhen Li
- Department of Organic ChemistryCollege of ChemistryJilin University Jiefang Road 2519 Changchun 130023 China
| | - Zengxin Qin
- Department of Organic ChemistryCollege of ChemistryJilin University Jiefang Road 2519 Changchun 130023 China
| | - Changjing Zhang
- Department of Organic ChemistryCollege of ChemistryJilin University Jiefang Road 2519 Changchun 130023 China
- College of ScienceNorth University of China Taiyuan 030051, Shanxi China
| | - Yingchao Zhang
- Department of Organic ChemistryCollege of ChemistryJilin University Jiefang Road 2519 Changchun 130023 China
| | - Chunxia Wen
- Department of Organic ChemistryCollege of ChemistryJilin University Jiefang Road 2519 Changchun 130023 China
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5
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Song LR, Fan Z, Zhang A. Recent advances in transition metal-catalyzed C(sp2)–H nitration. Org Biomol Chem 2019; 17:1351-1361. [DOI: 10.1039/c8ob02750a] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review updates advances of direct C(sp2)–H nitration for the synthesis of nitroaromatic compounds and the mechanisms during the past decade.
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Affiliation(s)
- Li-Rui Song
- CAS Key Laboratory of Receptor Research and the State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica (SIMM)
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Zhoulong Fan
- CAS Key Laboratory of Receptor Research and the State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica (SIMM)
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Ao Zhang
- CAS Key Laboratory of Receptor Research and the State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica (SIMM)
- Chinese Academy of Sciences
- Shanghai 201203
- China
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6
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7
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Cortés I, Kaufman TS, Bracca ABJ. A convenient and eco-friendly cerium(III) chloride-catalysed synthesis of methoxime derivatives of aromatic aldehydes and ketones. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180279. [PMID: 29892459 PMCID: PMC5990813 DOI: 10.1098/rsos.180279] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 04/18/2018] [Indexed: 05/28/2023]
Abstract
The use of CeCl3·7H2O as an efficient and eco-friendly promoter for the convenient synthesis of methoximes derived from aromatic aldehydes and ketones, is reported. The transformations entail the use of equimolar amounts of MeONH2·HCl and NaOAc in EtOH at 50°C, and no special precautions are needed with regard to the presence of oxygen. The scope and limitations of the transformation were studied and a reaction mechanism was proposed.
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8
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Mandal S, Bera T, Dubey G, Saha J, Laha JK. Uses of K2S2O8 in Metal-Catalyzed and Metal-Free Oxidative Transformations. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00743] [Citation(s) in RCA: 147] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sudip Mandal
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Tishyasoumya Bera
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Gurudutt Dubey
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
| | - Jaideep Saha
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Joydev K. Laha
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
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9
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Saxena P, Kapur M. Cobalt-Catalyzed C−H Nitration of Indoles by Employing a Removable Directing Group. Chem Asian J 2018; 13:861-870. [DOI: 10.1002/asia.201800036] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 02/07/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Paridhi Saxena
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal, Academic Building II; Bhopal Bypass Road Bhauri, Bhopal 462066 MP India
| | - Manmohan Kapur
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal, Academic Building II; Bhopal Bypass Road Bhauri, Bhopal 462066 MP India
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10
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Tu D, Luo J, Jiang C. Copper-mediated domino C–H iodination and nitration of indoles. Chem Commun (Camb) 2018; 54:2514-2517. [DOI: 10.1039/c8cc00267c] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An efficient and cost-effective copper-mediated aerobic oxidative C–H iodination and nitration of indoles via double C–H functionalization is reported. The domino process proceeds smoothly under mild aerobic conditions to give 3-iodo-2-nitroindoles in one step with high regioselectivity and a broad substrate scope.
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Affiliation(s)
- Daoquan Tu
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
| | - Jun Luo
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
| | - Chao Jiang
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
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11
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Khan B, Khan AA, Bora D, Verma D, Koley D. Copper-Catalyzed Remote C−H Nitration of 8-Amidoquinolines. ChemistrySelect 2017. [DOI: 10.1002/slct.201601917] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bhuttu Khan
- Medicinal and process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
| | - Afsar A. Khan
- Medicinal and process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
| | - Darshana Bora
- National Institute of Pharmaceutical Education and Research; Rae Bareli INDIA 229010
| | - Deepti Verma
- Medicinal and process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
| | - Dipankar Koley
- Medicinal and process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow INDIA 226031
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12
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Zhang B, Chen R, Jiang H, Zhou Q, Qiu F, Han D, Li R, Tang W, Zhong A, Zhang J, Yu X. Palladium-catalyzed highly regioselective 2-alkynylation of 2,x-dihalopyridines. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Le J, Gao Y, Ding Y, Jiang C. Cu-mediated C2-dehydrogenative homocoupling of indoles via C–H activation assisted by a removable N-pyrimidyl group. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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14
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Pawar GG, Brahmanandan A, Kapur M. Palladium(II)-Catalyzed, Heteroatom-Directed, Regioselective C–H Nitration of Anilines Using Pyrimidine as a Removable Directing Group. Org Lett 2016; 18:448-51. [DOI: 10.1021/acs.orglett.5b03493] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Govind Goroba Pawar
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462066, India
| | - Abhilashamole Brahmanandan
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462066, India
| | - Manmohan Kapur
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass
Road, Bhauri, Bhopal 462066, India
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15
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Shao LY, Li C, Guo Y, Yu KK, Zhao FY, Qiao WL, Liu HW, Liao DH, Ji YF. Pd-catalyzed direct oxidative mono-aroyloxylation of O-aralkyl substituted acetoxime ethers. RSC Adv 2016. [DOI: 10.1039/c6ra16105g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly site-selective palladium-catalyzed ortho-mono-aroyloxylation of O-aralkyl substituted acetoxime ethers via direct Csp2–H bond activation has been developed with simple exo-acetoxime as a directing group.
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Affiliation(s)
- Ling-Yan Shao
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Chao Li
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
- Roche R & D Center (China) Ltd
| | - Ying Guo
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Kun-Kun Yu
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Fei-Yi Zhao
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Wen-Li Qiao
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Hong-Wei Liu
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Dao-Hua Liao
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Ya-Fei Ji
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
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16
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Qiao HJ, Yang F, Wang SW, Leng YT, Wu YJ. Palladium-catalyzed ortho-nitration of 2-arylbenzoxazoles. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Rhodium(III)-catalyzed coupling of aromatic ketazines or oximes with 2-vinyloxirane via C–H activation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.08.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Zultanski SL, Stahl SS. Palladium-Catalyzed Aerobic Acetoxylation of Benzene using NO x-Based Redox Mediators. J Organomet Chem 2015; 52:97-102. [PMID: 25843978 DOI: 10.1016/j.jorganchem.2015.03.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Palladium-catalyzed methods for C-H oxygenation with O2 as the stoichiometric oxidant are limited. Here, we describe the use of nitrite and nitrate sources as NOx-based redox mediators in the acetoxylation of benzene. The conditions completely avoid formation of biphenyl as a side product, and strongly favor formation of phenyl acetate over nitrobenzene (PhOAc:PhNO2 ratios up to 40:1). Under the optimized reaction conditions, with 0.1 mol% Pd(OAc)2, 136 turnovers of Pd are achieved with only 1 atm of O2 pressure.
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Affiliation(s)
- Susan L Zultanski
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Shannon S Stahl
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
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19
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Liang YF, Li X, Wang X, Yan Y, Feng P, Jiao N. Aerobic Oxidation of PdII to PdIV by Active Radical Reactants: Direct C–H Nitration and Acylation of Arenes via Oxygenation Process with Molecular Oxygen. ACS Catal 2015. [DOI: 10.1021/cs502126n] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yu-Feng Liang
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Rd. 38, Beijing 100191, China
| | - Xinyao Li
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Rd. 38, Beijing 100191, China
| | - Xiaoyang Wang
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Rd. 38, Beijing 100191, China
| | - Yuepeng Yan
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Rd. 38, Beijing 100191, China
| | - Peng Feng
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Rd. 38, Beijing 100191, China
| | - Ning Jiao
- State
Key Laboratory of Natural and Biomimetic Drugs, Peking University,
School of Pharmaceutical Sciences, Peking University, Xue Yuan
Rd. 38, Beijing 100191, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200062, China
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20
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Zhang W, Zhang J, Ren S, Liu Y. Palladium-Catalyzed Aromatic C–H Bond Nitration Using Removable Directing Groups: Regiospecific Synthesis of Substituted o-Nitrophenols from Related Phenols. J Org Chem 2014; 79:11508-16. [DOI: 10.1021/jo502145v] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Wei Zhang
- State Key Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, College of Chemical
Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Jian Zhang
- State Key Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, College of Chemical
Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Shaobo Ren
- State Key Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, College of Chemical
Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Yunkui Liu
- State Key Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, College of Chemical
Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
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