|
1
|
Zhao R, Hong Z, Wang B, Kempson J, Cornelius L, Li J, Li YX, Mathur A. Regioselective synthesis of N1-substituted-4-nitropyrazole-5-carboxylates via the cyclocondensation of ethyl 4-(dimethylamino)-3-nitro-2-oxobut-3-enoate with substituted hydrazines. Org Biomol Chem 2022; 20:9746-9752. [PMID: 36444969 DOI: 10.1039/d2ob02006h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A simple and expeditious method for the regioselective synthesis of N1-substituted-4-nitropyrazole-5-carboxylates was developed. The method involves cyclocondensation of ethyl 4-(dimethylamino)-3-nitro-2-oxobut-3-enoate with a series of monosubstituted hydrazines to give N1-substituted-4-nitropyrazole-5-carboxylates with excellent regioselectivity and good yields. Solvent effects on regioselectivity of the cyclocondensation were examined.
Collapse
Affiliation(s)
- Rulin Zhao
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, PO Box 4000, Princeton, NJ 08543, USA.
| | - Zhenqiu Hong
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, PO Box 4000, Princeton, NJ 08543, USA.
| | - Bei Wang
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, PO Box 4000, Princeton, NJ 08543, USA.
| | - James Kempson
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, PO Box 4000, Princeton, NJ 08543, USA.
| | - Lyndon Cornelius
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, PO Box 4000, Princeton, NJ 08543, USA.
| | - Jianqing Li
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, 200 Cambridge Park Drive, Cambridge, MA 02140, USA
| | - Yi-Xin Li
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early, 700 Bay Rd, Redwood City, CA 04063, USA
| | - Arvind Mathur
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, PO Box 4000, Princeton, NJ 08543, USA.
| |
Collapse
|
|
2
|
Mittersteiner M, Andrade VP, Bonacorso HG, Martins MAP, Zanatta N. The Wonderful World of β‐Enamino Diketones Chemistry. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001039] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mateus Mittersteiner
- Núcleo de Química de Heterociclos (NUQUIMHE) Departmento de Química Universidade Federal de Santa Maria 97105‐900 Santa Maria RS Brazil
| | - Valquiria P. Andrade
- Núcleo de Química de Heterociclos (NUQUIMHE) Departmento de Química Universidade Federal de Santa Maria 97105‐900 Santa Maria RS Brazil
| | - Helio G. Bonacorso
- Núcleo de Química de Heterociclos (NUQUIMHE) Departmento de Química Universidade Federal de Santa Maria 97105‐900 Santa Maria RS Brazil
| | - Marcos A. P. Martins
- Núcleo de Química de Heterociclos (NUQUIMHE) Departmento de Química Universidade Federal de Santa Maria 97105‐900 Santa Maria RS Brazil
| | - Nilo Zanatta
- Núcleo de Química de Heterociclos (NUQUIMHE) Departmento de Química Universidade Federal de Santa Maria 97105‐900 Santa Maria RS Brazil
| |
Collapse
|
|
3
|
Souza TF, Silva MJV, Silva RGM, Gonçalves DS, Simon PA, Jacomini AP, Basso EA, Moura S, Martins MAP, Back DF, Rosa FA. Regiochemical Control of Pyrazoles by Solvent and β-Enamino Diketone Structure: Regioselective Synthesis of 4,5-Disubstituted N
-Phenylpyrazoles. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700048] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Thiago F. Souza
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Michael J. V. Silva
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Raí G. M. Silva
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Davana S. Gonçalves
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Paula A. Simon
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Andrey P. Jacomini
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Ernani A. Basso
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| | - Sidnei Moura
- Laboratório de Produtos Naturais e Sintéticos, Instituto de Biotecnologia; Universidade de Caxias do Sul (UCS); 95070-560 Caxias do Sul RS Brazil
| | - Marcos A. P. Martins
- Departamento de Química; Universidade Federal de Santa Maria (UFSM); 97110-970 Santa Maria, RS Brazil
| | - Davi F. Back
- Departamento de Química; Universidade Federal de Santa Maria (UFSM); 97110-970 Santa Maria, RS Brazil
| | - Fernanda A. Rosa
- Estereoquímica de Compostos Orgânicos e Docking Molecular; Departamento de Química; Universidade Estadual de Maringá (UEM); 87030-900 Maringá PR Brazil
| |
Collapse
|
|
4
|
Interplay of thermochemistry and Structural Chemistry, the journal (volume 26, 2015, issues 3–4) and the discipline. Struct Chem 2016. [DOI: 10.1007/s11224-016-0855-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
|
5
|
da Silva MJV, Silva RGM, Melo UZ, Gonçalves DS, Back DF, Moura S, Pontes RM, Basso EA, Gauze GF, Rosa FA. Theoretical and experimental investigation of the polyeletrophilic β-enamino diketone: straightforward and highly regioselective synthesis of 1,4,5-trisubstituted pyrazoles and pyrazolo[3,4-d]pyridazinones. RSC Adv 2016. [DOI: 10.1039/c5ra12968k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly efficient regioselective synthesis of 1,4,5-trisubstituted pyrazoles and pyrazolo[3,4-d]pyridazinones from enamino diketone along with a theoretical and experimental study of the chemical reactivity enamino diketone.
Collapse
|