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Nakaoka K, Guo C, Saiki Y, Furukawa S, Ema T. Synthesis of Enamines, Aldehydes, and Nitriles from CO 2: Scope of the One-Pot Strategy via Formamides. J Org Chem 2023; 88:15444-15451. [PMID: 36099541 DOI: 10.1021/acs.joc.2c01666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Tetrabutylammonium acetate (TBAA) and Cu(OAc)2 worked as a binary catalytic system for the solvent-free N-formylation of amines with CO2 and PhSiH3. This catalysis making C-H and C-N bonds with CO2 was coupled with the C-C bond-forming reactions to achieve the one-pot synthesis of enamines, aldehydes, and nitriles. The X-ray crystal structure of a Cu(OAc)2-TBAA complex was also revealed.
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Affiliation(s)
- Koichi Nakaoka
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
| | - Chao Guo
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
| | - Yuta Saiki
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
| | - Shin Furukawa
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
| | - Tadashi Ema
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
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Akhtar N, Chauhan M, Gupta P, Antil N, Manna K. A supported pyridylimine-cobalt catalyst for N-formylation of amines using CO 2. Dalton Trans 2023; 52:15384-15393. [PMID: 37043211 DOI: 10.1039/d3dt00058c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
N-Formylation of amines with CO2 as a cheap and non-toxic C1-feedstock and hydrosilane reducing agent is a practical and environment friendly method to synthesize formamides. This study describes an efficient and chemoselective mono-N-formylation of amines using CO2 and phenylsilane under mild conditions using a porous metal-organic framework (MOF)-supported single-site cobalt catalyst (pyrim-UiO-Co). The pyrim-UiO-Co MOF has a UiO-topology, and its organic linkers bear a pyridylimine ligated Co catalytic moiety. A wide range of aliphatic and aromatic amines are transformed into desired N-formamides in moderate to excellent yields under 1-5 bar CO2. Pyrim-UiO-Co is tolerant to various functional groups and could be recycled and reused at least 10 times. Mechanistic investigation using kinetic, spectroscopic and density functional theory studies suggests that the formylation of benzylamine proceeds sequentially via oxidative addition of PhSiH3 and CO2 insertion, followed by a turn-over limiting reaction with an amine. Our work highlights the importance of MOF-based Earth-abundant metal catalysts for the practical and eco-friendly synthesis of fine chemicals using cheap feedstocks.
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Affiliation(s)
- Naved Akhtar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
| | - Manav Chauhan
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
| | - Poorvi Gupta
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
| | - Neha Antil
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
| | - Kuntal Manna
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
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3
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Ratanasak M, Murata T, Adachi T, Hasegawa J, Ema T. Mechanism of BPh
3
‐Catalyzed N‐Methylation of Amines with CO
2
and Phenylsilane: Cooperative Activation of Hydrosilane. Chemistry 2022; 28:e202202210. [DOI: 10.1002/chem.202202210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Manussada Ratanasak
- Institute for Catalysis Hokkaido University Kita 21, Nishi 10, Kita-ku, Sapporo Hokkaido 001-0021 Japan
| | - Takumi Murata
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima-naka 3-1-1 Okayama 700-8530 Japan
| | - Taishin Adachi
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima-naka 3-1-1 Okayama 700-8530 Japan
| | - Jun‐ya Hasegawa
- Institute for Catalysis Hokkaido University Kita 21, Nishi 10, Kita-ku, Sapporo Hokkaido 001-0021 Japan
| | - Tadashi Ema
- Division of Applied Chemistry Graduate School of Natural Science and Technology Okayama University Tsushima-naka 3-1-1 Okayama 700-8530 Japan
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Newar R, Kalita R, Akhtar N, Antil N, Chauhan M, Manna K. N-Formylation of amines utilizing CO 2 by a heterogeneous metal–organic framework supported single-site cobalt catalyst. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01231f] [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
Single-site cobalt-hydride supported on oxo-nodes of a porous aluminium metal–organic framework is a chemoselective and reusable catalyst for N-formylation of amines using CO2.
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Affiliation(s)
- Rajashree Newar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Rahul Kalita
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Naved Akhtar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Neha Antil
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Manav Chauhan
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Kuntal Manna
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
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Dhawan S, Girase PS, Kumar V, Karpoormath R. HCl-mediated transamidation of unactivated formamides using aromatic amines in aqueous media. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1989597] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Sanjeev Dhawan
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban, South Africa
| | - Pankaj Sanjay Girase
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban, South Africa
| | - Vishal Kumar
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban, South Africa
| | - Rajshekhar Karpoormath
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban, South Africa
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Takaishi K, Kosugi H, Nishimura R, Yamada Y, Ema T. C-Methylenation of anilines and indoles with CO 2 and hydrosilane using a pentanuclear zinc complex catalyst. Chem Commun (Camb) 2021; 57:8083-8086. [PMID: 34302161 DOI: 10.1039/d1cc03675k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The one-step C-methylenation of anilines and indoles with CO2 and phenylsilane was catalyzed by a pentanuclear ZnII complex to give diarylmethanes via geminal C-H and C-C bond formation. It is proposed that the zinc-hydride complex generated in situ is a catalytically active species and that bis(silyl)acetal is a key intermediate. When aniline was used as a substrate, both the C-methylenation and N-methylation proceeded.
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Affiliation(s)
- Kazuto Takaishi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama 700-8530, Japan.
| | - Hiroyasu Kosugi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama 700-8530, Japan.
| | - Ritsuki Nishimura
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama 700-8530, Japan.
| | - Yuya Yamada
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama 700-8530, Japan.
| | - Tadashi Ema
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama 700-8530, Japan.
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