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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 39, 2009 - Issue 6
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Original Articles

Room-Temperature Synthesis of Pyrazoles, Diazepines, β-Enaminones, and β-Enamino Esters Using Silica-Supported Sulfuric Acid as a Reusable Catalyst Under Solvent-Free Conditions

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Pages 947-957 | Received 06 Jul 2008, Published online: 25 Feb 2009

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Read on this site (4)

HemantS. Chandak, NitinP. Lad & DipaliS. Dange. (2012) Greener and facile aqueous synthesis of pyrazoles using Amberlyst-70 as a recyclable catalyst. Green Chemistry Letters and Reviews 5:2, pages 135-138.
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Xing-Hai Liu, Cheng-Xia Tan & Jian-Quan Weng. (2011) Synthesis, Dimeric Crystal Structure, and Fungicidal Activity of 1-(4-Methylphenyl)-2-(5-((3,5-dimethyl-1H-pyrazol-1-yl)methyl)-4-phenyl-4H-1,2,4-triazol-3-ylthio)ethanone. Phosphorus, Sulfur, and Silicon and the Related Elements 186:3, pages 558-564.
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Articles from other publishers (48)

Sushma Yadav, Arti Jain & Priti Malhotra. (2024) Nanocatalyst driven synthesis of β-enaminones: A novel step towards the development of pharmaceutical precursors. Journal of the Indian Chemical Society 101:2, pages 101119.
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Kamal Das, Barnali Das, Bhaswati Paul, Ramalingam Natarajan & Swapan Majumdar. (2023) H-Bond Driven Solvent-Free Rapid Access of β-enamino Esters/Ketones using 230-400 Mesh Silica Gel as a Catalyst. Silicon 16:2, pages 967-977.
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Sushma Singh, Sidhant Yadav, Minakshi Minakshi & Rashmi Pundeer. (2023) Green Synthesis of Pyrazoles: Recent Developments in Aqueous Methods. SynOpen 07:03, pages 297-312.
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Sagar R. Kande. (2022) Succinimide-N-sulfonic Acid Catalyzed One Pot, Efficient Synthesis of Substituted Pyrazoles. Oriental Journal Of Chemistry 38:4, pages 1059-1063.
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Mengyuan Cheng, Yufeng Liu, Weixin Du, Jingwen Shi, Junhua Li, Haiying Wang, Ke Li, Guoping Yang & Dongdi Zhang. (2022) Two Dawson-type U(VI)-containing selenotungstates with sandwich structure and its high‐efficiency catalysis for pyrazoles. Chinese Chemical Letters 33:8, pages 3899-3902.
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Aekkaphon Mokkarat, Senee Kruanetr & Uthai Sakee. (2022) Facial preparation of trifluoroacetic acid-immobilized amino-functionalized silica magnetite nano-catalysts as a highly efficient and reusable for synthesis of β-enaminones. Journal of Molecular Structure 1259, pages 132745.
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Jie Zhou, Tao Yu, Ke Li, Kai Zeng, Guo-Ping Yang & Chang-Wen Hu. (2022) Two U(VI)-Containing Silicotungstates with Sandwich Structures: Lewis Acid–Base Synergistic Catalyzed Synthesis of Benzodiazepines and Pyrazoles. Inorganic Chemistry 61:7, pages 3050-3057.
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Haojie Ma, Fengyuan Zhou, Jinlei Liu, Bo Han, Hua Yang, Yuqi Zhang & Jijiang Wang. (2022) Construction of Substituted N -Phenylpyrazoles via a Catalyst- Free and Additive-Free Intermolecular Cyclization Process . Chinese Journal of Organic Chemistry 42:6, pages 1843.
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Andrew N. Boa & Martin J. McPhillie. 2022. Comprehensive Heterocyclic Chemistry IV. Comprehensive Heterocyclic Chemistry IV 243 268 .
Leimajam Vartima Chanu & Okram Mukherjee Singh. (2021) Recent progress in the synthesis of azoles and related five‐membered ring heterocycles using silica‐supported heterogeneous catalysts. Journal of Heterocyclic Chemistry 58:12, pages 2207-2225.
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Atif Mustafa, Shaheen Siddiqui, Mohd Umar Khan, Abdulaziz Abdullah Qasem Ali & Zeba N. Siddiqui. (2021) Recent Advances in Synthesis of Pyrazole Derivatives using Functionalized Catalysts Immobilized on Silica. ChemistrySelect 6:33, pages 8611-8629.
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Divya Sree Uppalapati, Rama Sekhara Reddy Dachuru & Satya Veni Sunkara. (2021) Silica sulfuric acid mediated synthesis of naphtho[2,1‐ b ]furan derivatives and development of  one‐pot  multicomponent synthesis of substituted pyrazole derivatives . Journal of Heterocyclic Chemistry 58:8, pages 1695-1699.
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Anjana Delpe-Acharige, Man Zhang, Kayla Eschliman, Alex Dalecki, Obdulia Covarrubias-Zambrano, Azriel Minjarez-Almeida, Tejaswi Shrestha, Tanji Lewis, Fatimah Al-Ibrahim, Sophia Leonard, Riana Roberts, Anteneh Tebeje, Aruni P. Malalasekera, Hongwang Wang, Madumali Kalubowilage, Frank Wolschendorf, Olaf Kutsch & Stefan H. Bossmann. (2021) Pyrazolyl Thioureas and Carbothioamides with an NNSN Motif against MSSA and MRSA. ACS Omega 6:9, pages 6088-6099.
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J. D. Bhirud, G. R. Gupta & H. P. Narkhede. (2020) Oxidative Cyclization of Chalcones in the Presence of Sulfamic Acid as Catalyst. Synthesis, Biological Activity, and Thermal Properties of 1,3,5-Trisubstituted Pyrazoles. Russian Journal of Organic Chemistry 56:10, pages 1815-1822.
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Adelew Estifanos Filkale & Chandni Pathak. (2020) Dinuclear cobalt complexes supported by biphenol and binaphthol-derived bis(salicylaldimine) ligands: synthesis, characterization and catalytic application in β-enaminone synthesis from 1,3-dicarbonyl compounds and aliphatic amines. New Journal of Chemistry 44:35, pages 15109-15121.
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Ezzat Khan, Muhammad Khalid, Zarif Gul, Adnan Shahzad, Muhammad Nawaz Tahir, Hafiz Muhammad Asif, Sumreen Asim & Ataualpa Albert Carmo Braga. (2020) Molecular structure of 1,4-bis(substituted-carbonyl)benzene: A combined experimental and theoretical approach. Journal of Molecular Structure 1205, pages 127633.
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Qiaohe Zhang, Biao Hu, Yuxuan Zhao, Siyun Zhao, Yanqin Wang, Biao Zhang, Shengjiao Yan & Fuchao Yu. (2020) Synthesis of N ‐Sulfonyl Pyrazoles Through Cyclization Reactions of Sulfonyl Hydrazines with Enaminones Promoted by p ‐TSA . European Journal of Organic Chemistry 2020:9, pages 1154-1159.
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Pargat Singh & Mahendra Nath. (2019) A Concise Account on Eco-friendly Synthetic Strategies for Pyrazole Heterocycles. Current Green Chemistry 6:3, pages 198-209.
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Seyyed Rasul Mousavi, Hassan Sereshti, Hamid Rashidi Nodeh & Alireza Foroumadi. (2018) A novel and reusable magnetic nanocatalyst developed based on graphene oxide incorporated strontium nanoparticles for the facial synthesis of β‐enamino ketones under solvent‐free conditions. Applied Organometallic Chemistry 33:1.
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Thalita F.B. de Aquino, Jessica P. Seidel, Daniela H. de Oliveira, José Edmilson R. do Nascimento, Diego Alves, Gelson Perin, Eder J. Lenardão, Ricardo F. Schumacher & Raquel G. Jacob. (2018) Copper-catalyzed synthesis of 1,3,5-triaryl-4-(organylselanyl)-1H-pyrazoles by one-pot multicomponent reactions. Tetrahedron Letters 59:46, pages 4090-4095.
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Se Hun Kwak, Nurbey Gulia & Olafs Daugulis. (2018) Synthesis of Unsymmetrical 2,6-Diarylanilines by Palladium-Catalyzed C–H Bond Functionalization Methodology. The Journal of Organic Chemistry 83:10, pages 5844-5850.
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Hashem Sharghi, Jasem Aboonajmi, Mozhdeh Mozaffari, Mohammad Mahdi Doroodmand & Mahdi Aberi. (2017) Application and developing of iron‐doped multi‐walled carbon nanotubes (Fe/MWCNTs) as an efficient and reusable heterogeneous nanocatalyst in the synthesis of heterocyclic compounds. Applied Organometallic Chemistry 32:3.
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John S. Maass, Randall K. Wilharm, Rudy L. Luck & Matthias Zeller. (2018) Photoluminescent properties of three lanthanide compounds of formulae LnCl3(diphenyl((5-phenyl-1H-pyrazol-3-yl)methyl)phosphine oxide)2, Ln = Sm, Eu and Tb: X-ray structural, emission and vibrational spectroscopies, DFT and thermogravimetric studies. Inorganica Chimica Acta 471, pages 481-492.
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Bhaskar Sarmah & Rajendra Srivastava. (2017) Octahedral MnO 2 Molecular Sieve-Decorated Meso -ZSM-5 Catalyst for Eco-Friendly Synthesis of Pyrazoles and Carbamates . Industrial & Engineering Chemistry Research 56:51, pages 15017-15029.
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Carla I. Nieto, Rosa M. Claramunt, M. Carmen Torralba, M. Rosario Torres & Jose Elguero. (2017) Crystal structure of (1 Z ,4 Z )-2,4-dimethyl-3 H -benzo[ b ][1,4]diazepine . Acta Crystallographica Section E Crystallographic Communications 73:5, pages 647-650.
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Zhi-Hao Zhou, Cheng-Kun Li, Shao-Fang Zhou, Adedamola Shoberu & Jian-Ping Zou. (2017) Copper-catalyzed methylation of 1,3-diketones with tert-butyl peroxybenzoate. Tetrahedron 73:19, pages 2740-2746.
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Felipe Wodtke, Fernando R. Xavier, Samuel R. Mendes, Alfredo R.M. de Oliveira & Rogério A. Gariani. (2017) A simple protocol for the preparation of β-enamino ketones catalyzed by NbOPO4 under solvent free conditions. Tetrahedron Letters 58:3, pages 231-234.
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Colin H. McAteer, Ramiah Murugan & Yarlagadda V. Subba Rao. 2017. Heterocyclic Chemistry in the 21st Century - A Tribute to Alan Katritzky. Heterocyclic Chemistry in the 21st Century - A Tribute to Alan Katritzky 173 205 .
Ian J. Bakanas & Gustavo Moura‐Letts. (2016) Synthesis of Tetrasubstituted Pyrazoles from Substituted Hydrazines and β‐Keto Esters. European Journal of Organic Chemistry 2016:32, pages 5345-5349.
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Heshmatollah Alinezhad, Mahmood Tajbakhsh, Malihe Norouzi Sarkati & Mahboobe Zare. (2016) Nano-SiO2 catalyzed synthesis of β-enaminones under solvent free conditions. Monatshefte für Chemie - Chemical Monthly 147:9, pages 1591-1596.
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A. M. Maharramov, A. I. Ismiyev, M. A. Allahverdiyev, A. V. Maleev & K. A. Potekhin. (2016) Crystal structure of phenylhydrazine with diacetyl substituted ketol of the cyclohexane series. Journal of Structural Chemistry 57:4, pages 764-770.
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Daniela H. Oliveira, Thalita B. Aquino, José Edmilson R. Nascimento, Gelson Perin, Raquel G. Jacob & Diego Alves. (2015) Direct Synthesis of 4‐Organylselanylpyrazoles by Copper‐ Catalyzed One‐Pot Cyclocondensation and CH Bond Selenylation Reactions. Advanced Synthesis & Catalysis 357:18, pages 4041-4049.
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Ananda Mane, Prabha Salokhe, Pallavi More & Rajashri Salunkhe. (2015) An efficient practical chemo-enzymatic protocol for the synthesis of pyrazoles in aqueous medium at ambient temperature. Journal of Molecular Catalysis B: Enzymatic 121, pages 75-81.
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Samira Bahemmat, Bernhard Neumüller & Mitra Ghassemzadeh. (2015) One‐Pot Synthesis of an Oxalato‐Bridged Cu II Coordination Polymer Containing an In Situ Produced Pyrazole Moiety: A Precursor for the Preparation of CuO Nano­structures . European Journal of Inorganic Chemistry 2015:24, pages 4116-4124.
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Chengliang Feng, Shuguang Zhang, Jin Cai, Junqing Chen, Huayou Hu & Min Ji. (2019) Zinc Triflate Catalysed Synthesis of β-Enamino Ketones(Esters) under Solvent-Free Conditions. Journal of Chemical Research 37:10, pages 626-629.
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Jian Sun, Zhengping Dong, Ping Li, Fengwei Zhang, Shuoyun Wei, Zhiqiang Shi & Rong Li. (2013) Ag nanoparticles in hollow magnetic mesoporous spheres: A highly efficient and magnetically separable catalyst for synthesis of β-enaminones. Materials Chemistry and Physics 140:1, pages 1-6.
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Buchi Reddy Vaddula, Rajender S. Varma & John Leazer. (2013) Mixing with microwaves: solvent-free and catalyst-free synthesis of pyrazoles and diazepines. Tetrahedron Letters 54:12, pages 1538-1541.
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Liangguang Wang, Xiaoqiang Yu, Xiujuan Feng & Ming Bao. (2013) Synthesis of 3,5-Disubstituted Pyrazoles via Cope-Type Hydroamination of 1,3-Dialkynes. The Journal of Organic Chemistry 78:4, pages 1693-1698.
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James H. Clark, James W. Comerford & D. J. Macquarrie. 2013. Innovations in Green Chemistry and Green Engineering. Innovations in Green Chemistry and Green Engineering 37 80 .
Weibing Liu, Cui Chen & Qing Zhang. (2012) FeCl 3 -PTSA Co-Catalysed Highly Regio- and Stereo-Selective Synthesis of β-Functionalised Enamine Derivatives . Journal of Chemical Research 36:3, pages 175-177.
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James H. Clark, James W. Comerford & D. J. Macquarrie. 2019. Green Chemistry and Chemical Engineering. Green Chemistry and Chemical Engineering 51 81 .
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Ju‐Yan Liu, Gai‐E Cao, Wei Xu, Jie Cao & Wei‐Lu Wang. (2010) Ni(OAc) 2 : a highly efficient catalyst for the synthesis of enaminone and enamino ester derivatives under solvent‐free conditions . Applied Organometallic Chemistry 24:10, pages 685-691.
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Xiang Chen, Jin She, Zhi‐Cai Shang, Jun Wu & Peizhi Zhang. (2009) ChemInform Abstract: Room‐Temperature Synthesis of Pyrazoles, Diazepines, β‐Enaminones, and β‐Enamino Esters Using Silica‐Supported Sulfuric Acid as a Reusable Catalyst under Solvent‐Free Conditions.. ChemInform 40:33.
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