|
1
|
Carbocation Catalysis in the Synthesis of Heterocyclic Compounds. Chem Heterocycl Compd (N Y) 2023. [DOI: 10.1007/s10593-023-03157-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
|
|
2
|
Baghery S, Zarei M, Zolfigol MA, Mallakpour S, Behranvand V. Application of trityl moieties in chemical processes: part I. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-01980-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
|
3
|
Hebishy AMS, Elgemeie GH, Elwahy AHM. Novel Bis(2‐cyanoketene‐
S
,
S
‐/
S
,
N
‐acetals): Versatile Precursors for Novel Bis(aminopyrazole) Derivatives. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3536] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ali M. S. Hebishy
- Chemistry Department, Faculty of ScienceHelwan University Cairo Egypt
| | - Galal H. Elgemeie
- Chemistry Department, Faculty of ScienceHelwan University Cairo Egypt
| | | |
Collapse
|
|
4
|
Brahmachari G, Nurjamal K, Begam S, Mandal M, Nayek N, Karmakar I, Mandal B. Alum (KAl(SO4)2.12H2O) - An Eco-friendly and Versatile Acid-catalyst in Organic Transformations: A Recent Update. CURRENT GREEN CHEMISTRY 2019. [DOI: 10.2174/2213346106666190307160332] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Potassium alum (KAl(SO4)2.12H2O), commonly known as ‘alum’, has recently drawn the attention of synthetic chemists as an efficient, safe and eco-friendly acid catalyst in implementing a large number of organic transformations, thereby generating interesting molecular frameworks. The present review article offers an overview of the potent catalytic applications of this commercially available and low-cost inorganic sulfate salt in organic reactions reported during the period of 2014 to 2018.
Collapse
Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (Central University), Santiniketan-731 235, West Bengal, India
| | - Khondekar Nurjamal
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (Central University), Santiniketan-731 235, West Bengal, India
| | - Sanchari Begam
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (Central University), Santiniketan-731 235, West Bengal, India
| | - Mullicka Mandal
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (Central University), Santiniketan-731 235, West Bengal, India
| | - Nayana Nayek
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (Central University), Santiniketan-731 235, West Bengal, India
| | - Indrajit Karmakar
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (Central University), Santiniketan-731 235, West Bengal, India
| | - Bhagirath Mandal
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (Central University), Santiniketan-731 235, West Bengal, India
| |
Collapse
|
|
5
|
Moosavi-Zare AR, Zolfigol MA, Rezanejad Z. Trityl chloride promoted the synthesis of 3-(2,6-diarylpyridin-4-yl)-1H-indoles and 2,4,6-triarylpyridines by in situ generation of trityl carbocation and anomeric based oxidation in neutral media. CAN J CHEM 2016. [DOI: 10.1139/cjc-2015-0629] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An efficient protocol for the synthesis of 2,4,6-triarylpyridines and 3-(2,6-diarylpyridin-4-yl)-1H-indoles by the one-pot pseudo four component condensation reaction of aldehydes with acetophenones and ammonium acetate in the presence of Ph3CCl under neutral and solvent-free conditions has been reported. Mechanistically, it is interesting that trityl chloride by in situ generation of trityl carbocation (Ph3C+) promotes the reaction. In this work, seven products have been reported for the first time.
Collapse
Affiliation(s)
| | | | - Zahir Rezanejad
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6517838683, Iran
| |
Collapse
|
|
6
|
Synthesis of pyranopyrazole derivatives by in situ generation of trityl carbocation under mild and neutral media. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2537-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
|
7
|
Alum as a Catalyst for the Synthesis of Bispyrazole Derivatives. APPLIED SCIENCES-BASEL 2016. [DOI: 10.3390/app6010027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
|
8
|
Zare A, Merajoddin M, Moosavi-Zare AR, Zarei M. In situ generation of trityl carbocation (Ph3C+) as a homogeneous organocatalyst for the efficient synthesis of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)s. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(12)60728-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|