1
|
Fujioka H, Yasui M, Hamada S, Fukumi K, Takeda N, Kobayashi Y, Furuta T, Ueda M. Palladium-catalyzed C-C bond cleavage of N-cyclopropyl acylhydrazones. Org Biomol Chem 2024; 22:3262-3267. [PMID: 38568183 DOI: 10.1039/d4ob00349g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Despite their utility as directing groups, the C-C bond cleavage of cyclopropanes utilizing hydrazones has not been explored. Herein, Pd-catalyzed C-C bond cleavage reaction of N-cyclopropyl acylhydrazones, followed by cycloisomerization to yield pyrazoles, has been developed. The protocol enables the synthesis of various α-pyrazole carbonyl compounds, which have a potential of biological activity. Control experiments and DFT calculations suggest that β-carbon elimination of a stable 6-membered chelate palladium complex occurs, generating a conjugated azine as a reaction intermediate for the following cycloisomerization.
Collapse
Affiliation(s)
- Hiroki Fujioka
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Motohiro Yasui
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Shohei Hamada
- Department of Pharmaceutical Chemistry, Kyoto Pharmaceutical University, Yamashina-ku, Kyoto 607-8414, Japan.
| | - Kohei Fukumi
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Norihiko Takeda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Yusuke Kobayashi
- Department of Pharmaceutical Chemistry, Kyoto Pharmaceutical University, Yamashina-ku, Kyoto 607-8414, Japan.
| | - Takumi Furuta
- Department of Pharmaceutical Chemistry, Kyoto Pharmaceutical University, Yamashina-ku, Kyoto 607-8414, Japan.
| | - Masafumi Ueda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| |
Collapse
|
2
|
Paixão DB, Soares EGO, Salles HD, Silva CDG, Rampon DS, Schneider PH. Rongalite in PEG-400 as a general and reusable system for the synthesis of 2,5-disubstituted chalcogenophenes. Org Chem Front 2022. [DOI: 10.1039/d2qo01069k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Herein we report the use of rongalite in PEG-400 as a general, efficient, and environmentally benign reductive system for the synthesis of a wide range of 2,5-disubstituted chalcogenophenes from elemental sulfur, selenium and tellurium.
Collapse
Affiliation(s)
- Douglas B. Paixão
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Eduardo G. O. Soares
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Helena D. Salles
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Caren D. G. Silva
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Daniel S. Rampon
- Laboratório de Polímeros e Catálise (LAPOCA), Departamento de Química, Universidade Federal do Paraná (UFPR), P.O. Box 19061, 81531-990, Curitiba, PR, Brazil
| | - Paulo H. Schneider
- Instituto de Química, Departamento de Química Orgânica, Universidade Federal do Rio Grande do Sul (UFRGS), P.O. Box 15003, 91501-970, Porto Alegre, RS, Brazil
| |
Collapse
|
3
|
Chen K, Lv S, Lai R, Yang Z, Hai L, Nie R, Wu Y. Cobalt‐Mediated Decarboxylative/Desilylative C‐H Activation/Annulation Reaction: An Efficient Approach to Natural Alkaloids and New Structural Analogues. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kang Chen
- Sichuan University West China School of Pharmacy Medicinal chemistry CHINA
| | - Shan Lv
- Sichuan University West China School of Pharmacy medicinal chemistry CHINA
| | - Ruizhi Lai
- Sichuan University West China School of Pharmacy medicinal chemistry CHINA
| | - Zhongzhen Yang
- Sichuan University West China School of Pharmacy medicinal chemistry CHINA
| | - Li Hai
- Sichuan University West China School of Pharmacy medicinal chemistry CHINA
| | - Ruifang Nie
- Shandong Provincial Hospital affiliated to Shandong First Medical University Pharmacy CHINA
| | - Yong Wu
- Sichuan University West China School of Pharmacy NO. 17, Sec 3, Renmin Road S 610041 Chengdu CHINA
| |
Collapse
|
4
|
Dalton T, Faber T, Glorius F. C-H Activation: Toward Sustainability and Applications. ACS CENTRAL SCIENCE 2021; 7:245-261. [PMID: 33655064 PMCID: PMC7908034 DOI: 10.1021/acscentsci.0c01413] [Citation(s) in RCA: 264] [Impact Index Per Article: 88.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Indexed: 05/14/2023]
Abstract
Since the definition of the "12 Principles of Green Chemistry" more than 20 years ago, chemists have become increasingly mindful of the need to conserve natural resources and protect the environment through the judicious choice of synthetic routes and materials. The direct activation and functionalization of C-H bonds, bypassing intermediate functional group installation is, in abstracto, step and atom economic, but numerous factors still hinder the sustainability of large-scale applications. In this Outlook, we highlight the research areas seeking to overcome the sustainability challenges of C-H activation: the pursuit of abundant metal catalysts, the avoidance of static directing groups, the replacement of metal oxidants, and the introduction of bioderived solvents. We close by examining the progress made in the subfield of aryl C-H borylation from its origins, through highly efficient but precious Ir-based systems, to emerging 3d metal catalysts. The future growth of this field will depend on industrial uptake, and thus we urge researchers to strive toward sustainable C-H activation.
Collapse
Affiliation(s)
- Toryn Dalton
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 4048149 Münster, Germany
| | - Teresa Faber
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 4048149 Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 4048149 Münster, Germany
| |
Collapse
|
5
|
Deshmukh DS, Gangwar N, Bhanage BM. N-Tosylhydrazone as an oxidizing directing group for the redox-neutral access to isoquinolines via Cp∗Co(III)-Catalyzed C–H/N–N activation. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
6
|
Dhawa U, Kaplaneris N, Ackermann L. Green strategies for transition metal-catalyzed C–H activation in molecular syntheses. Org Chem Front 2021. [DOI: 10.1039/d1qo00727k] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Sustainable strategies for the activation of inert C–H bonds towards improved resource-economy.
Collapse
Affiliation(s)
- Uttam Dhawa
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Nikolaos Kaplaneris
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
- Woehler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| |
Collapse
|
7
|
Guo W, Cai L, Xie Z, Mei W, Liu G, Deng L, Zhuo X, Zhong Y, Zou X, Zheng L, Fan X. Photocatalyzed intermolecular amination for the synthesis of hydrazonamides. Org Chem Front 2021. [DOI: 10.1039/d1qo00338k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A photocatalyzed intermolecular amination strategy for the synthesis of hydrazonamides is reported by a multi-component reaction of β-ketonitriles with N,N-disubstituted hydrazines.
Collapse
Affiliation(s)
- Wei Guo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Liuhuan Cai
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Zhen Xie
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Weijie Mei
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Gongping Liu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Ling Deng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Xiaoya Zhuo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Yumei Zhong
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Xiaoying Zou
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Lvyin Zheng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Xiaolin Fan
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| |
Collapse
|
8
|
Gujjarappa R, Vodnala N, Malakar CC. Comprehensive Strategies for the Synthesis of Isoquinolines: Progress Since 2008. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000658] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Raghuram Gujjarappa
- Department of Chemistry National Institute of Technology Manipur Imphal 795004 Manipur India
| | - Nagaraju Vodnala
- Department of Chemistry National Institute of Technology Manipur Imphal 795004 Manipur India
| | - Chandi C. Malakar
- Department of Chemistry National Institute of Technology Manipur Imphal 795004 Manipur India
| |
Collapse
|
9
|
Nie B, Wu W, Zeng W, Ren Q, Zhang J, Zhang Y, Jiang H. Synthesis of Isoquinoline Derivatives via Palladium‐Catalyzed C−H/C−N Bond Activation of
N
‐Acyl Hydrazones with
α
‐Substituted Vinyl Azides. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901394] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Biao Nie
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 People's Republic of China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 People's Republic of China
| | - Wei Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 People's Republic of China
| | - Qingyun Ren
- State Key Laboratory of Anti-Infective Drug Development Dongguan 523871 People's Republic of China
| | - Ji Zhang
- State Key Laboratory of Anti-Infective Drug Development Dongguan 523871 People's Republic of China
| | - Yingjun Zhang
- State Key Laboratory of Anti-Infective Drug Development Dongguan 523871 People's Republic of China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University) Lanzhou 730000 People's Republic of China
| |
Collapse
|
10
|
Subhedar DD, Deshmukh DS, Bhanage BM. Cp*Co(III) catalyzed annulation of N-Cbz hydrazones for the redox-neutral synthesis of isoquinolines via C–H/N–N bond activation. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1655765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | - Dewal S. Deshmukh
- Department of Chemistry, Institute of Chemical Technology, Mumbai, India
| | | |
Collapse
|
11
|
Xie Z, Chen R, Ma M, Kong L, Liu J, Wang C. Copper‐catalyzed one‐pot coupling reactions of aldehydes (ketones), tosylhydrazide and 2‐amino(benzo)thiazoles: An efficient strategy for the synthesis of
N
‐alkylated (benzo)thiazoles. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5124] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zengyang Xie
- Laboratory of New Antitumor Drug Molecular Design & Synthesis, College of Basic MedicineJining Medical University Jining 272067 China
| | - Ruijiao Chen
- Laboratory of New Antitumor Drug Molecular Design & Synthesis, College of Basic MedicineJining Medical University Jining 272067 China
| | - Mingfang Ma
- Laboratory of New Antitumor Drug Molecular Design & Synthesis, College of Basic MedicineJining Medical University Jining 272067 China
| | - Lingdong Kong
- Laboratory of New Antitumor Drug Molecular Design & Synthesis, College of Basic MedicineJining Medical University Jining 272067 China
| | - Jun Liu
- Laboratory of New Antitumor Drug Molecular Design & Synthesis, College of Basic MedicineJining Medical University Jining 272067 China
| | - Cunde Wang
- School of Chemistry and Chemical EngineeringYangzhou University Yangzhou 225002 China
| |
Collapse
|
12
|
Deshmukh DS, Gangwar N, Bhanage BM. Rapid and Atom Economic Synthesis of Isoquinolines and Isoquinolinones by C-H/N-N Activation Using a Homogeneous Recyclable Ruthenium Catalyst in PEG Media. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900366] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Dewal S. Deshmukh
- Department of Chemistry; Institute of Chemical Technology; -400019 Mumbai India
| | - Neha Gangwar
- Department of Chemistry; Institute of Chemical Technology; -400019 Mumbai India
| | | |
Collapse
|
13
|
Gomez Pinheiro GE, Ihmels H, Dohmen C. Mild Synthesis of Fluorosolvatochromic and Acidochromic 3-Hydroxy-4-pyridylisoquinoline Derivatives from Easily Available Substrates. J Org Chem 2019; 84:3011-3016. [PMID: 30701977 DOI: 10.1021/acs.joc.8b03272] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The reaction of sodium cyanate with benzo[ b]quinolizinium substrates at room temperature gave 3-hydroxy-4-pyridyl-isoquinoline derivatives in good yields. Presumably, the overall reaction proceeds through an ANRORC-type sequence, that is, addition of the nucleophile, ring opening, and ring closure. Preliminary photophysical investigation of the parent compound revealed a pronounced sensitivity of its emission properties toward solvent effects and the pH of the medium.
Collapse
Affiliation(s)
- Gabriel E Gomez Pinheiro
- Department of Chemistry and Biology, and Center of Micro and Nanochemistry and Engineering , University of Siegen , Adolf-Reichwein-Str. 2 , 57068 Siegen , Germany
| | - Heiko Ihmels
- Department of Chemistry and Biology, and Center of Micro and Nanochemistry and Engineering , University of Siegen , Adolf-Reichwein-Str. 2 , 57068 Siegen , Germany
| | - Christoph Dohmen
- Department of Chemistry and Biology, and Center of Micro and Nanochemistry and Engineering , University of Siegen , Adolf-Reichwein-Str. 2 , 57068 Siegen , Germany
| |
Collapse
|
14
|
Guo W, Zhao M, Tan W, Zheng L, Tao K, Fan X. Developments towards synthesis of N-heterocycles from amidines via C–N/C–C bond formation. Org Chem Front 2019. [DOI: 10.1039/c9qo00283a] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review focuses on the synthesis of N-heterocycles using amidines as starting materials, with an emphasis on the mechanisms of these reactions via C–N/C–C bond formation.
Collapse
Affiliation(s)
- Wei Guo
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Mingming Zhao
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Wen Tan
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Lvyin Zheng
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Kailiang Tao
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Xiaolin Fan
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| |
Collapse
|
15
|
Deshmukh DS, Yadav PA, Bhanage BM. Cp*Co(iii)-catalyzed annulation of azines by C–H/N–N bond activation for the synthesis of isoquinolines. Org Biomol Chem 2019; 17:3489-3496. [DOI: 10.1039/c9ob00174c] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An atom economic and external oxidant free methodology has been developed for the synthesis of isoquinolines by Cp*Co(iii) catalyzed annulation of azines via C–H/N–N activation.
Collapse
Affiliation(s)
- Dewal S. Deshmukh
- Department of Chemistry
- Institute of Chemical Technology (ICT)
- Mumbai
- India
| | - Prashant A. Yadav
- Department of Chemistry
- Institute of Chemical Technology (ICT)
- Mumbai
- India
| | | |
Collapse
|
16
|
Yang Z, Pi C, Cui X, Wu Y. One-pot synthesis of pyranoquinolin-1-ones via Rh(iii)-catalysed redox annulation of 3-carboxyquinolines and alkynes. Org Chem Front 2019. [DOI: 10.1039/c9qo00710e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A highly efficient and simple one-pot procedure to synthesize 3,4-dihydro-pyrano[4,3-b]quinolin-1-ones via Rh(iii)-catalysed [4 + 2] redox annulation of 3-carboxyquinolines with internal alkynes.
Collapse
Affiliation(s)
- Zhijia Yang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Chao Pi
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Xiuling Cui
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Yangjie Wu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| |
Collapse
|
17
|
Mishra AA, Subhedar D, Bhanage BM. Nickel, Cobalt and Palladium Catalysed C−H Functionalization of Un‐Activated C(sp
3
)−H Bond. CHEM REC 2018; 19:1829-1857. [DOI: 10.1002/tcr.201800093] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 09/02/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Ashish A. Mishra
- Department of ChemistryInstitute of Chemical Technology, Matunga Nathalal Parekh Marg Mumbai Maharashtra
| | - Dnyaneshwar Subhedar
- Department of ChemistryInstitute of Chemical Technology, Matunga Nathalal Parekh Marg Mumbai Maharashtra
| | - Bhalchandra M. Bhanage
- Department of ChemistryInstitute of Chemical Technology, Matunga Nathalal Parekh Marg Mumbai Maharashtra
| |
Collapse
|