51
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Chong CC, Kinjo R. Hydrophosphination of CO2 and subsequent formate transfer in the 1,3,2-diazaphospholene-catalyzed N-formylation of amines. Angew Chem Int Ed Engl 2015; 54:12116-20. [PMID: 26276547 DOI: 10.1002/anie.201505244] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 07/05/2015] [Indexed: 11/11/2022]
Abstract
Hydrophosphination of CO2 with 1,3,2-Diazaphospholene (NHP-H; 1) afforded phosphorus formate (NHP-OCOH; 2) through the formation of a bond between the electrophilic phosphorus atom in 1 and the oxygen atom from CO2 , along with hydride transfer to the carbon atom of CO2 . Transfer of the formate from 2 to Ph2 SiH2 produced Ph2 Si(OCHO)2 (3) in a reaction that could be carried out in a catalytic manner by using 5 mol % of 1. These elementary reactions were applied to the metal-free catalytic N-formylation of amine derivatives with CO2 in one pot under ambient conditions.
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Affiliation(s)
- Che Chang Chong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore 637371 (Singapore)
| | - Rei Kinjo
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore 637371 (Singapore).
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52
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Chong CC, Kinjo R. Hydrophosphination of CO2and Subsequent Formate Transfer in the 1,3,2-Diazaphospholene-CatalyzedN-Formylation of Amines. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505244] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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53
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Pal R, Groy TL, Trovitch RJ. Conversion of Carbon Dioxide to Methanol Using a C–H Activated Bis(imino)pyridine Molybdenum Hydroboration Catalyst. Inorg Chem 2015. [DOI: 10.1021/acs.inorgchem.5b01102] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Raja Pal
- Department of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287, United States
| | - Thomas L. Groy
- Department of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287, United States
| | - Ryan J. Trovitch
- Department of Chemistry and
Biochemistry, Arizona State University, Tempe, Arizona 85287, United States
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54
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Liu M, Qin T, Zhang Q, Fang C, Fu Y, Lin BL. Thermal-reductive transformations of carbon dioxide catalyzed by small molecules using earth-abundant elements. Sci China Chem 2015. [DOI: 10.1007/s11426-015-5405-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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55
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Courtemanche MA, Légaré MA, Rochette É, Fontaine FG. Phosphazenes: efficient organocatalysts for the catalytic hydrosilylation of carbon dioxide. Chem Commun (Camb) 2015; 51:6858-61. [PMID: 25791523 DOI: 10.1039/c5cc01282a] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Phosphazene superbases are efficient organocatalysts for the metal-free catalytic hydrosilylation of carbon dioxide. They react with CO2 to form the respective phosphine oxides, but in the presence of hydrosilanes, CO2 can be selectively reduced to silyl formates, which can in turn be reduced to methoxysilanes by addition of an extra loading of silanes. Activities reach a TOF of 32 h(-1) with a TON of 759. It is also shown that unexpectedly, N,N-dimethylformamide can reduce CO2 to a mixture of silyl formates, acetals and methoxides in the absence of any catalyst.
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Affiliation(s)
- Marc-André Courtemanche
- Département de Chimie and Centre de Catalyse et Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec, Canada.
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56
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Chen J, Chen EYX. Elusive Silane-Alane Complex [SiH⋅⋅⋅Al]: Isolation, Characterization, and Multifaceted Frustrated Lewis Pair Type Catalysis. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502400] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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57
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Chen J, Chen EYX. Elusive Silane-Alane Complex [SiH⋅⋅⋅Al]: Isolation, Characterization, and Multifaceted Frustrated Lewis Pair Type Catalysis. Angew Chem Int Ed Engl 2015; 54:6842-6. [DOI: 10.1002/anie.201502400] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Indexed: 11/10/2022]
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58
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Declercq R, Bouhadir G, Bourissou D, Légaré MA, Courtemanche MA, Nahi KS, Bouchard N, Fontaine FG, Maron L. Hydroboration of Carbon Dioxide Using Ambiphilic Phosphine–Borane Catalysts: On the Role of the Formaldehyde Adduct. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00189] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Richard Declercq
- Université de Toulouse, UPS, Laboratoire Hétérochimie Fondamentale et Appliqué (LHFA), 118 route de Narbonne, 31062 Toulouse, France
- CNRS, LHFA, UMR 5069, 31062 Toulouse, France
| | - Ghenwa Bouhadir
- Université de Toulouse, UPS, Laboratoire Hétérochimie Fondamentale et Appliqué (LHFA), 118 route de Narbonne, 31062 Toulouse, France
- CNRS, LHFA, UMR 5069, 31062 Toulouse, France
| | - Didier Bourissou
- Université de Toulouse, UPS, Laboratoire Hétérochimie Fondamentale et Appliqué (LHFA), 118 route de Narbonne, 31062 Toulouse, France
- CNRS, LHFA, UMR 5069, 31062 Toulouse, France
| | - Marc-André Légaré
- Département
de Chimie, Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada, G1V 0A6
| | - Marc-André Courtemanche
- Département
de Chimie, Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada, G1V 0A6
| | - Karine Syrine Nahi
- Département
de Chimie, Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada, G1V 0A6
| | - Nicolas Bouchard
- Département
de Chimie, Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada, G1V 0A6
| | - Frédéric-Georges Fontaine
- Département
de Chimie, Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada, G1V 0A6
| | - Laurent Maron
- Université de Toulouse, INSA, UPS, LCPNO, CNRS, UMR 5215 CNRS-UPS-INSA, 135 avenue de Rangueil, 31400 Toulouse, France
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59
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Metsänen TT, Oestreich M. Temperature-Dependent Chemoselective Hydrosilylation of Carbon Dioxide to Formaldehyde or Methanol Oxidation State. Organometallics 2014. [DOI: 10.1021/om501279a] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Toni T. Metsänen
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
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60
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Scheuermann ML, Semproni SP, Pappas I, Chirik PJ. Carbon Dioxide Hydrosilylation Promoted by Cobalt Pincer Complexes. Inorg Chem 2014; 53:9463-5. [DOI: 10.1021/ic501901n] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Margaret L. Scheuermann
- Frick Laboratory, Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Scott P. Semproni
- Frick Laboratory, Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Iraklis Pappas
- Frick Laboratory, Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Paul J. Chirik
- Frick Laboratory, Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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61
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Reducing CO₂ to methanol using frustrated Lewis pairs: on the mechanism of phosphine-borane-mediated hydroboration of CO₂. J Am Chem Soc 2014; 136:10708-17. [PMID: 24948159 DOI: 10.1021/ja5047846] [Citation(s) in RCA: 174] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The full mechanism of the hydroboration of CO2 by the highly active ambiphilic organocatalyst 1-Bcat-2-PPh2-C6H4 (Bcat = catecholboryl) was determined using computational and experimental methods. The intramolecular Lewis pair was shown to be involved in every step of the stepwise reduction. In contrast to traditional frustrated Lewis pair systems, the lack of steric hindrance around the Lewis basic fragment allows activation of the reducing agent while moderate Lewis acidity/basicity at the active centers promotes catalysis by releasing the reduction products. Simultaneous activation of both the reducing agent and carbon dioxide is the key to efficient catalysis in every reduction step.
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62
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Gladysz JA, Bedford RB, Fujita M, Gabbaı̈ FP, Goldberg KI, Holland PL, Kiplinger JL, Krische MJ, Louie J, Lu CC, Norton JR, Petrukhina MA, Ren T, Stahl SS, Tilley TD, Webster CE, White MC, Whiteker GT. Organometallics Roundtable 2013–2014. Organometallics 2014. [DOI: 10.1021/om500253z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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63
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Fontaine FG, Courtemanche MA, Légaré MA. Transition-metal-free catalytic reduction of carbon dioxide. Chemistry 2014; 20:2990-6. [PMID: 24523131 DOI: 10.1002/chem.201304376] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Indexed: 11/09/2022]
Abstract
Metal-free systems, including frustrated Lewis pairs (FLPs) have been shown to bind CO2. By reducing the Lewis acidity and basicity of the ambiphilic system, it is possible to generate active catalysts for the deoxygenative hydroboration of carbon dioxide to methanol derivatives with conversion rates comparable to those of transition-metal-based catalysts.
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Affiliation(s)
- Frédéric-Georges Fontaine
- Département de Chimie,Université Laval, 1045 Avenue de la Médecine, Québec, QC, G1V 0A6 (Canada), Fax: (+1) 418-656-7916.
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