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2
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Sitte NA, Menche M, Tužina P, Bienewald F, Schäfer A, Comba P, Rominger F, Hashmi ASK, Schaub T. Phosphine-Catalyzed Vinylation at Low Acetylene Pressure. J Org Chem 2021; 86:13041-13055. [PMID: 34469141 DOI: 10.1021/acs.joc.1c01807] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The vinylation of various nucleophiles with acetylene at a maximum pressure of 1.5 bar is achieved by organocatalysis with easily accessible phosphines like tri-n-butylphosphine. A detailed mechanistic investigation by quantum-chemical and experimental methods supports a nucleophilic activation of acetylene by the phosphine catalyst. At 140 °C and typically 5 mol % catalyst loading, cyclic amides, oxazolidinones, ureas, unsaturated cyclic amines, and alcohols were successfully vinylated. Furthermore, the in situ generation of a vinyl phosphonium species can also be utilized in Wittig-type functionalization of aldehydes.
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Affiliation(s)
- Nikolai A Sitte
- Catalysis Research Laboratory (CaRLa), Im Neuenheimer Feld 584, D-69120 Heidelberg, Germany
| | - Maximilian Menche
- Catalysis Research Laboratory (CaRLa), Im Neuenheimer Feld 584, D-69120 Heidelberg, Germany.,BASF SE, Quantum Chemistry, Carl-Bosch-Straße 38, D-67056 Ludwigshafen, Germany
| | - Pavel Tužina
- BASF SE, Chemical Synthesis Research, Carl-Bosch-Straße 38, D-67056 Ludwigshafen, Germany
| | - Frank Bienewald
- BASF SE, Chemical Synthesis Research, Carl-Bosch-Straße 38, D-67056 Ludwigshafen, Germany
| | - Ansgar Schäfer
- BASF SE, Quantum Chemistry, Carl-Bosch-Straße 38, D-67056 Ludwigshafen, Germany
| | - Peter Comba
- Institute of Inorganic Chemistry & Interdisciplinary Center for Scientific Computing, Heidelberg University, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Frank Rominger
- Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - A Stephen K Hashmi
- Catalysis Research Laboratory (CaRLa), Im Neuenheimer Feld 584, D-69120 Heidelberg, Germany.,Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Thomas Schaub
- Catalysis Research Laboratory (CaRLa), Im Neuenheimer Feld 584, D-69120 Heidelberg, Germany.,BASF SE, Chemical Synthesis Research, Carl-Bosch-Straße 38, D-67056 Ludwigshafen, Germany
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4
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Chen G, Liu H, Li S, Tang Y, Lu P, Xu K, Zhang Y. A Novel PPh 3 Mediated One-Pot Method for Synthesis of 3-Aryl or Alkyl 1,2-Benzisoxazoles. Org Lett 2017; 19:1792-1795. [PMID: 28357871 DOI: 10.1021/acs.orglett.7b00563] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel, efficient, and facile protocol has been developed for transforming 2-hydroxybenzonitriles and bromides into a range of 3-aryl or alkyl substituted 1,2-benzisoxazoles in good to excellent yields mediated by PPh3. The electronic and steric effects of bromides on the reaction are discussed. This is the first example to construct a C-C bond and heterocycle in a Barbier-Grignard-type reaction featuring easier recovery of PPh3 than a metallic catalyst in one step.
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Affiliation(s)
- GuiFang Chen
- Department of Chemistry, College of Chemistry and Materials, Jinan University , Guangzhou 510632, China
| | - Hong Liu
- Department of Chemistry, College of Chemistry and Materials, Jinan University , Guangzhou 510632, China
| | - ShuJia Li
- Department of Chemistry, College of Chemistry and Materials, Jinan University , Guangzhou 510632, China
| | - Yu Tang
- Department of Chemistry, College of Chemistry and Materials, Jinan University , Guangzhou 510632, China
| | - PeiYao Lu
- Department of Pharmacy, College of Pharmacy, Jinan University , Guangzhou 510632, China
| | - KaiTian Xu
- Department of Chemistry, College of Chemistry and Materials, Jinan University , Guangzhou 510632, China
| | - YuanMing Zhang
- Department of Chemistry, College of Chemistry and Materials, Jinan University , Guangzhou 510632, China
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10
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dos Santos ER, Freire RO, da Costa NB, Paz FAA, de Simone CA, Júnior SA, Araújo AAS, Nunes LAO, de Mesquita ME, Rodrigues MO. Theoretical and Experimental Spectroscopic Approach of Fluorinated Ln3+−β-Diketonate Complexes. J Phys Chem A 2010; 114:7928-36. [DOI: 10.1021/jp104038r] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Edjane R. dos Santos
- Department of Chemistry, UFS, 49100-000 São Cristóvão, SE, Brazil, Department of Chemistry Fundamental, UFPE, 50590-470 Recife, PE, Brazil, Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal, Department of Chemistry, UFAL, 57072-970 Maceió, AL, Brazil, and Physics Institute of São Carlos, IFSC/USP, 13560-970 São Carlos, SP, Brazil
| | - Ricardo O. Freire
- Department of Chemistry, UFS, 49100-000 São Cristóvão, SE, Brazil, Department of Chemistry Fundamental, UFPE, 50590-470 Recife, PE, Brazil, Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal, Department of Chemistry, UFAL, 57072-970 Maceió, AL, Brazil, and Physics Institute of São Carlos, IFSC/USP, 13560-970 São Carlos, SP, Brazil
| | - Nivan B. da Costa
- Department of Chemistry, UFS, 49100-000 São Cristóvão, SE, Brazil, Department of Chemistry Fundamental, UFPE, 50590-470 Recife, PE, Brazil, Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal, Department of Chemistry, UFAL, 57072-970 Maceió, AL, Brazil, and Physics Institute of São Carlos, IFSC/USP, 13560-970 São Carlos, SP, Brazil
| | - Filipe A. Almeida Paz
- Department of Chemistry, UFS, 49100-000 São Cristóvão, SE, Brazil, Department of Chemistry Fundamental, UFPE, 50590-470 Recife, PE, Brazil, Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal, Department of Chemistry, UFAL, 57072-970 Maceió, AL, Brazil, and Physics Institute of São Carlos, IFSC/USP, 13560-970 São Carlos, SP, Brazil
| | - Carlos A. de Simone
- Department of Chemistry, UFS, 49100-000 São Cristóvão, SE, Brazil, Department of Chemistry Fundamental, UFPE, 50590-470 Recife, PE, Brazil, Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal, Department of Chemistry, UFAL, 57072-970 Maceió, AL, Brazil, and Physics Institute of São Carlos, IFSC/USP, 13560-970 São Carlos, SP, Brazil
| | - Severino A. Júnior
- Department of Chemistry, UFS, 49100-000 São Cristóvão, SE, Brazil, Department of Chemistry Fundamental, UFPE, 50590-470 Recife, PE, Brazil, Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal, Department of Chemistry, UFAL, 57072-970 Maceió, AL, Brazil, and Physics Institute of São Carlos, IFSC/USP, 13560-970 São Carlos, SP, Brazil
| | - Adriano A. S. Araújo
- Department of Chemistry, UFS, 49100-000 São Cristóvão, SE, Brazil, Department of Chemistry Fundamental, UFPE, 50590-470 Recife, PE, Brazil, Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal, Department of Chemistry, UFAL, 57072-970 Maceió, AL, Brazil, and Physics Institute of São Carlos, IFSC/USP, 13560-970 São Carlos, SP, Brazil
| | - Luiz Antônio O. Nunes
- Department of Chemistry, UFS, 49100-000 São Cristóvão, SE, Brazil, Department of Chemistry Fundamental, UFPE, 50590-470 Recife, PE, Brazil, Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal, Department of Chemistry, UFAL, 57072-970 Maceió, AL, Brazil, and Physics Institute of São Carlos, IFSC/USP, 13560-970 São Carlos, SP, Brazil
| | - Maria E. de Mesquita
- Department of Chemistry, UFS, 49100-000 São Cristóvão, SE, Brazil, Department of Chemistry Fundamental, UFPE, 50590-470 Recife, PE, Brazil, Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal, Department of Chemistry, UFAL, 57072-970 Maceió, AL, Brazil, and Physics Institute of São Carlos, IFSC/USP, 13560-970 São Carlos, SP, Brazil
| | - Marcelo O. Rodrigues
- Department of Chemistry, UFS, 49100-000 São Cristóvão, SE, Brazil, Department of Chemistry Fundamental, UFPE, 50590-470 Recife, PE, Brazil, Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal, Department of Chemistry, UFAL, 57072-970 Maceió, AL, Brazil, and Physics Institute of São Carlos, IFSC/USP, 13560-970 São Carlos, SP, Brazil
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