1
|
Fang Z, Teng Y, Yang H, Li R, Li Q, You Y, Weng Z. Synthesis of 4-trifluoromethyl pyridazines via annulation of pyridinium ylides with trifluoroacetyl diazoester. Org Biomol Chem 2022; 20:3564-3569. [PMID: 35420110 DOI: 10.1039/d2ob00483f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A base promoted annulation of pyridinium ylides with trifluoroacetyl diazoester has been reported. Highly functionalized 4-trifluoromethyl pyridazines were synthesized in good yields without the use of any heavy metal catalysts. The developed methodology was compatible with a variety of important functional groups. Mechanistic studies revealed that trifluoroacetylated hydrazone was an active intermediate of this three-component annulation. Synthetic versatility of the method via aminolysis and condensation toward amide- and pyridazino[4,5-c]pyridazine-derivatives has been showcased.
Collapse
Affiliation(s)
- Zheng Fang
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
| | - Yun Teng
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
| | - Huilin Yang
- Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China.
| | - Rongxing Li
- Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China.
| | - Qiuhong Li
- Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China.
| | - Yi You
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
| | - Zhiqiang Weng
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China. .,Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China.
| |
Collapse
|
2
|
Zhang C. Synthesis of trifluoromethyl or trifluoroacetyl substituted heterocyclic compounds from trifluoromethyl‐α,β‐ynones. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202100544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Cai Zhang
- Department of Safety Supervision and Management Chongqing Vocational Institute of Safety Technology Chongqing People's Republic of China
| |
Collapse
|
3
|
Pasha M, Tanaka F. Organocatalytic diastereo- and enantioselective oxa-hetero-Diels-Alder reactions of enones with aryl trifluoromethyl ketones for the synthesis of trifluoromethyl-substituted tetrahydropyrans. Org Biomol Chem 2021; 19:9242-9250. [PMID: 34661230 DOI: 10.1039/d1ob01844b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Tetrahydropyran derivatives are found in bioactives, and introduction of the trifluoromethyl group into molecules often improves biofunctions. Here we report diastereo- and enantioselective oxa-hetero-Diels-Alder reactions catalyzed by amine-based catalyst systems that afford trifluoromethyl-substituted tetrahydropyranones. Catalyst systems and conditions suitable for the reactions to provide the desired diastereomer products with high enantioselectivities were identified, and various trifluoromethyl-substituted tetrahydropyranones were synthesized with high diastereo- and enantioselectivities. Mechanistic investigation suggested that the reactions involve a [4 + 2] cycloaddition pathway, in which the enamine of the enone acts as the diene and the ketone carbonyl group of the aryl trifluoromethyl ketone acts as the dienophile. In this study, tetrahydropyran derivatives with the desired stereochemistry that are difficult to synthesize by previously reported methods were concisely obtained, and the range of tetrahydropyran derivatives that can be synthesized was expanded.
Collapse
Affiliation(s)
- Maira Pasha
- Chemistry and Chemical Bioengineering Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna, Okinawa 904-0495, Japan.
| | - Fujie Tanaka
- Chemistry and Chemical Bioengineering Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna, Okinawa 904-0495, Japan.
| |
Collapse
|
4
|
Talbi S, Dib M, Bouissane L, Hafid A, Rabi S, Khouili M. Recent Progress in the Synthesis of Heterocycles Based on 1,3-Diketones. Curr Org Synth 2021; 19:220-245. [PMID: 34635043 DOI: 10.2174/1570179418666211011141428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/10/2021] [Accepted: 09/02/2021] [Indexed: 11/22/2022]
Abstract
N,O-heterocycles containing the dicarbonyl ring play a significant role in heterocyclic and therapeutic chemistry. Since the discovery of 1,3-diketones, numerous research works have been achieved regarding the synthesis and its chemical reactivity. In this review, we have described the most relevant publications involving β-diketone compounds published during the period between 2018 to date. In addition, we include the 1,3-diketones-based heterocyclic compounds prepared by various synthetic methodologies.
Collapse
Affiliation(s)
- Soumaya Talbi
- Laboratoire de Chimie Organique et Analytique, Équipe de Chimie Organique et Organométallique Appliquées, Faculté des Sciences et Techniques, Université Sultan Moulay Slimane, BP 523, 23000 Beni-Mellal. Morocco
| | - Mustapha Dib
- Laboratoire de Chimie Organique et Analytique, Équipe de Chimie Organique et Organométallique Appliquées, Faculté des Sciences et Techniques, Université Sultan Moulay Slimane, BP 523, 23000 Beni-Mellal. Morocco
| | - Latifa Bouissane
- Laboratoire de Chimie Organique et Analytique, Équipe de Chimie Organique et Organométallique Appliquées, Faculté des Sciences et Techniques, Université Sultan Moulay Slimane, BP 523, 23000 Beni-Mellal. Morocco
| | - Abderrafia Hafid
- Laboratoire de Chimie Organique et Analytique, Équipe de Chimie Organique et Organométallique Appliquées, Faculté des Sciences et Techniques, Université Sultan Moulay Slimane, BP 523, 23000 Beni-Mellal. Morocco
| | - Souad Rabi
- Laboratoire de Chimie Organique et Analytique, Équipe de Chimie Organique et Organométallique Appliquées, Faculté des Sciences et Techniques, Université Sultan Moulay Slimane, BP 523, 23000 Beni-Mellal. Morocco
| | - Mostafa Khouili
- Laboratoire de Chimie Organique et Analytique, Équipe de Chimie Organique et Organométallique Appliquées, Faculté des Sciences et Techniques, Université Sultan Moulay Slimane, BP 523, 23000 Beni-Mellal. Morocco
| |
Collapse
|