1
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Zhang M, Han B, Ma H, Zhao L, Wang J, Zhang Y. Hydrosilanes as Hydrogen Source: Iridium-Catalyzed Hydrogenation of N-Heteroarenes. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202110041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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2
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Bories CC, Barbazanges M, Derat E, Petit M. Implication of a Silyl Cobalt Dihydride Complex as a Useful Catalyst for the Hydrosilylation of Imines. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03886] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Cassandre C. Bories
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 Place Jussieu, 75005 Paris, France
| | - Marion Barbazanges
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 Place Jussieu, 75005 Paris, France
| | - Etienne Derat
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 Place Jussieu, 75005 Paris, France
| | - Marc Petit
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 Place Jussieu, 75005 Paris, France
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3
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Bisai MK, Gour K, Das T, Vanka K, Sen SS. Lithium compound catalyzed deoxygenative hydroboration of primary, secondary and tertiary amides. Dalton Trans 2021; 50:2354-2358. [PMID: 33570073 DOI: 10.1039/d1dt00364j] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A selective and efficient route for the deoxygenative reduction of primary to tertiary amides to corresponding amines has been achieved with pinacolborane (HBpin) using simple and readily accessible 2,6-di-tert-butyl phenolate lithium·THF (1a) as a catalyst. Both experimental and DFT studies provide mechanistic insight.
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Affiliation(s)
- Milan Kumar Bisai
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Kritika Gour
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Tamal Das
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India and Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India
| | - Kumar Vanka
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India and Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India
| | - Sakya S Sen
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pashan, Pune 411008, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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4
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Yao W, Wang J, Lou Y, Wu H, Qi X, Yang J, Zhong A. Chemoselective hydroborative reduction of nitro motifs using a transition-metal-free catalyst. Org Chem Front 2021. [DOI: 10.1039/d1qo00705j] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The first transition-metal-free catalysts for deoxygenative reduction of nitroarenes, nitro heteroarenes and even notoriously challenging nitroalkanes using pinacolborane have been reported.
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Affiliation(s)
- Wubing Yao
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Jiaojiang 318000
- P.R. China
- Department of Chemistry
| | - Jiali Wang
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Jiaojiang 318000
- P.R. China
- Department of Chemistry
| | - Yinpeng Lou
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Jiaojiang 318000
- P.R. China
| | - Haijian Wu
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Jiaojiang 318000
- P.R. China
| | - Xinxin Qi
- Department of Chemistry
- Zhejiang Sci-Tech University
- Hangzhou 310018
- P.R. China
| | - Jianguo Yang
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Jiaojiang 318000
- P.R. China
- Department of Chemistry
| | - Aiguo Zhong
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Jiaojiang 318000
- P.R. China
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5
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Gao L, Zhang H, Liu X, Wang G, Li S. Mechanistic insights into the dearomative diborylation of pyrazines: a radical or non-radical process? Dalton Trans 2021; 50:6982-6990. [DOI: 10.1039/d1dt00921d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanisms of the dearomative diborylation of pyrazines were investigated via a combination of density functional theory calculations and experimental studies.
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Affiliation(s)
- Liuzhou Gao
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education
- Institute of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Hanyin Zhang
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education
- Institute of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Xueting Liu
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education
- Institute of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Guoqiang Wang
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education
- Institute of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Shuhua Li
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education
- Institute of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
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6
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Yao W, Wang J, Zhong A, Li J, Yang J. Combined KOH/BEt 3 Catalyst for Selective Deaminative Hydroboration of Aromatic Carboxamides for Construction of Luminophores. Org Lett 2020; 22:8086-8090. [PMID: 33026813 DOI: 10.1021/acs.orglett.0c03033] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The selective catalytic C-N bond cleavage of amides into value-added amine products is a desirable but challenging transformation. Molecules containing iminodibenzyl motifs are prevalent in pharmaceutical molecules and functional materials. Here we established a combined KOH/BEt3 catalyst for deaminative hydroboration of acyl-iminodibenzyl derivatives, including nonheterocyclic carboxamides, to the corresponding amines. This novel transition-metal-free methodology was also applied to the construction of Clomipramine and luminophores.
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Affiliation(s)
- Wubing Yao
- School of Pharmaceutical and Materials Engineering, Taizhou University, Jiaojiang 318000, P. R. China.,Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Jiali Wang
- School of Pharmaceutical and Materials Engineering, Taizhou University, Jiaojiang 318000, P. R. China.,Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Aiguo Zhong
- School of Pharmaceutical and Materials Engineering, Taizhou University, Jiaojiang 318000, P. R. China
| | - Jinshan Li
- School of Pharmaceutical and Materials Engineering, Taizhou University, Jiaojiang 318000, P. R. China
| | - Jianguo Yang
- School of Pharmaceutical and Materials Engineering, Taizhou University, Jiaojiang 318000, P. R. China.,Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
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7
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Du Q, Liu L, Zhou T. General and Efficient Copper-Catalyzed Oxazaborolidine Complex in Transfer Hydrogenation of Isoquinolines under Mild Conditions. ACS OMEGA 2020; 5:21219-21225. [PMID: 32875258 PMCID: PMC7450644 DOI: 10.1021/acsomega.0c02957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
A general and efficient method for copper-catalyzed transfer hydrogenation of isoquinolines with an oxazaborolidine-BH3 complex, under mild reaction conditions, is successfully developed. A broad range of isoquinolines has been reduced to the corresponding products with 61-85% yields. The method is applied to the synthesis of biologically active tetrahydrosioquinoline alkaloid (±)-norlaudanosine in 62% yield, which is the key precursor for the preparation of (±)-laudanosine, (±)-N-methyl-laudanosine, and (±)-xylopinine in one or two steps.
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Affiliation(s)
- Qianyu Du
- College
of Chemistry and Chemical Engineering, Southwest
Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, China
| | - Linpeng Liu
- College
of Chemistry and Chemical Engineering, Southwest
Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, China
| | - Taigang Zhou
- College
of Chemistry and Chemical Engineering, Southwest
Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, China
- State
Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, China
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8
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Yusof MSM, Othman MHD, Wahab RA, Jumbri K, Razak FIA, Kurniawan TA, Abu Samah R, Mustafa A, Rahman MA, Jaafar J, Ismail AF. Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121214. [PMID: 31546216 DOI: 10.1016/j.jhazmat.2019.121214] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 09/06/2019] [Accepted: 09/10/2019] [Indexed: 06/10/2023]
Abstract
The contribution of palm oil fuel ash (POFA), an agricultural waste as a low cost adsorbent for the removal of arsenite (As(III)) and arsenate (As(V)) was explored. Investigation on the adsorbency characteristics of POFA suspension revealed that the surface area, particle size, composition, and crystallinity of the SiO2 rich mullite structure were the crucial factors in ensuring a high adsorption capacity of the ions. Maximum adsorption capacities of As(III) and As(V) at 91.2 and 99.4 mg g-1, respectively, were obtained when POFA of 30 μm particle size was employed at pH 3 with the highest calcination temperature at 1150 °C. An optimum dosage of 1.0 g of dried POFA powder successfully removed 48.7% and 50.2% of As(III) and As(V), respectively. Molecular modeling using the density functional theory consequently identified the energy for the proposed reaction routes between the SiO- and As+ species. The high stability of the POFA suspension in water in conjunction with good adsorption capacity of As(III) and As(V) seen in this study, thus envisages its feasibility as a potential alternative absorbent for the remediation of water polluted with heavy metals.
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Affiliation(s)
- Mohamad Sukri Mohamad Yusof
- Advance Membrane Technology Research Centre, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Mohd Hafiz Dzarfan Othman
- Advance Membrane Technology Research Centre, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Enzyme Technology and Green Synthesis Group, Department of Chemistry, Faculty of Science, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Khairulazhar Jumbri
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Fazira Ilyana Abdul Razak
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Enzyme Technology and Green Synthesis Group, Department of Chemistry, Faculty of Science, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Tonni Agustiono Kurniawan
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment Ecology, Xiamen University, Xiamen 361102 Fujian, PR China
| | - Rozaimi Abu Samah
- Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300, Kuantan, Pahang, Malaysia
| | - Azeman Mustafa
- Advance Membrane Technology Research Centre, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Mukhlis Abdul Rahman
- Advance Membrane Technology Research Centre, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Juhana Jaafar
- Advance Membrane Technology Research Centre, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Ahmad Fauzi Ismail
- Advance Membrane Technology Research Centre, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
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9
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Liu Y, Zhang D, Ma Y, Li J, Bai Y, Peng J. The Hydrosilylation and Cyanosilylation of Ketones Catalyzed using Metal Borohydrides. Curr Org Synth 2020; 16:276-282. [PMID: 31975676 DOI: 10.2174/1570179415666181114111939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 09/27/2018] [Accepted: 10/27/2018] [Indexed: 11/22/2022]
Abstract
AIM AND OBJECTIVE The hydrosilylation reaction of carbonyl compounds has emerged as a powerful method in organic synthesis. The catalytic hydrosilylation of ketones is a valuable transformation because it generates protected cyanosilylation reaction of carbonyl compounds is an efficient procedure for the synthesis of silylated cyanohydrins, which are readily converted into useful functionalized compounds, such as cyanohydrins, α-hydroxy acids, β-amino alcohols and other biologically active compounds. MATERIALS AND METHODS A facile, economic and efficient method has been developed for the hydrosilylation and cyanosilylation of ketones using metal borohydrides. A series of silylated ethers and silylated cyanohydrins can be isolated via direct distillation. RESULTS The catalytic properties of a range of metal borohydrides in the hydrosilylation reaction of acetophenone with diphenylsilane were investigated. The relative catalytic activity of the borohydride catalyst studied was as follows: (CH3)4NBH4> (PhCH2)(CH3)3NBH4> (CH2CH3)4NBH4> (CH3CH2CH2CH3)4NBH4> NaBH4> KBH4> LiBH4. The cyanosilylation of acetophenone using trimethylsilyl cyanide (TMSCN) in the presence of NaBH4 occurred under similar reaction conditions. An excellent reaction rate and high conversion were obtained. CONCLUSION The metal borohydride-catalyzed hydrosilylation alcohols in one step. The and cyanosilylation of ketones could be carried out smoothly under mild reaction conditions. Among the metal borohydrides studied, an excellent reaction rate and high conversion were obtained using NaBH4, NaBH (CH2CH3)3 or (alkyl)4 NBH4 as the reaction catalyst.
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Affiliation(s)
- Yu Liu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Duodong Zhang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Yangyang Ma
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiayun Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Ying Bai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiajian Peng
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
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10
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Nowicki M, Zaranek M, Pawluć P, Hoffmann M. DFT study of trialkylborohydride-catalysed hydrosilylation of alkenes – the mechanism and its implications. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02261a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A detailed DFT study reveals the mechanism of trialkylborohydride-catalysed Markovnikov hydrosilylation of aromatic alkenes.
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Affiliation(s)
- Mateusz Nowicki
- Laboratory of Quantum Chemistry
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
| | - Maciej Zaranek
- Center for Advanced Technology
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
- Department of Organometallic Chemistry
| | - Piotr Pawluć
- Center for Advanced Technology
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
- Department of Organometallic Chemistry
| | - Marcin Hoffmann
- Laboratory of Quantum Chemistry
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
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11
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Yao W, Wang J, Zhong A, Wang S, Shao Y. Transition-metal-free catalytic hydroboration reduction of amides to amines. Org Chem Front 2020. [DOI: 10.1039/d0qo01092h] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The selective catalytic reduction of amides to value-added amine products is a desirable but challenging transformation.
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Affiliation(s)
- Wubing Yao
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Jiaojiang 318000
- P.R. China
- Department of Chemistry
| | - Jiali Wang
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Jiaojiang 318000
- P.R. China
- Department of Chemistry
| | - Aiguo Zhong
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Jiaojiang 318000
- P.R. China
| | - Shiliang Wang
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Jiaojiang 318000
- P.R. China
| | - Yinlin Shao
- College of Chemistry & Materials Engineering and Institute of New Materials & Industrial Technology
- Wenzhou University
- Wenzhou 325035
- P.R. China
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12
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Maity R, Das B, Das I. Transition‐Metal‐Free Reduction of
α
‐Keto Thioesters with Hydrosilanes at Room Temperature: Divergent Synthesis through Reagent‐Controlled Chemoselectivities. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900222] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Rajib Maity
- Organic and Medicinal Chemistry DivisionCSIR-Indian Institute of Chemical Biology 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Bhanuranjan Das
- Organic and Medicinal Chemistry DivisionCSIR-Indian Institute of Chemical Biology 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Indrajit Das
- Organic and Medicinal Chemistry DivisionCSIR-Indian Institute of Chemical Biology 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
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13
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Pan Y, Luo Z, Han J, Xu X, Chen C, Zhao H, Xu L, Fan Q, Xiao J. B(C
6
F
5
)
3
‐Catalyzed Deoxygenative Reduction of Amides to Amines with Ammonia Borane. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801447] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yixiao Pan
- Department of ChemistryRenmin University of China Beijing 100872 People's Republic of China
| | - Zhenli Luo
- Department of ChemistryRenmin University of China Beijing 100872 People's Republic of China
| | - Jiahong Han
- Department of ChemistryRenmin University of China Beijing 100872 People's Republic of China
| | - Xin Xu
- Department of ChemistryRenmin University of China Beijing 100872 People's Republic of China
| | - Changjun Chen
- Department of ChemistryRenmin University of China Beijing 100872 People's Republic of China
| | - Haoqiang Zhao
- Department of ChemistryRenmin University of China Beijing 100872 People's Republic of China
| | - Lijin Xu
- Department of ChemistryRenmin University of China Beijing 100872 People's Republic of China
| | - Qinghua Fan
- Institute of ChemistryChinese Academy of Sciences Beijing 100190 People's Republic of China
| | - Jianliang Xiao
- Department of ChemistryUniversity of Liverpool Liverpool L69 7ZD United Kingdom
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14
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Shi Y, Gao Q, Xu S. NHC-Copper-Catalyzed Asymmetric Dearomative Silylation of Indoles. J Org Chem 2018; 83:14758-14767. [PMID: 30358397 DOI: 10.1021/acs.joc.8b02308] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We report an asymmetric dearomative silylation reaction of 3-acylindoles using a chiral NHC-copper(I) complex as catalyst to afford a range of cyclic α-aminosilanes with high regio- and enantioselectivity. Initial mechanistic studies revealed that the observed high diastereoselectivity was attributed to the facile epimerization of the 3-acyl group. We also demonstrated that the product could be used as a versatile precursor for the synthesis of functionalized indolines in high enantiomeric purity.
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Affiliation(s)
- Yongjia Shi
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Lanzhou 73000 , China
| | - Qian Gao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Lanzhou 73000 , China
| | - Senmiao Xu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Lanzhou 73000 , China.,Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education , Hangzhou Normal University , Hangzhou 311121 , P. R. China
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15
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Murai M, Nishinaka N, Takai K. Iridium-Catalyzed Sequential Silylation and Borylation of Heteroarenes Based on Regioselective C-H Bond Activation. Angew Chem Int Ed Engl 2018; 57:5843-5847. [PMID: 29573532 DOI: 10.1002/anie.201801229] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 03/06/2018] [Indexed: 12/30/2022]
Abstract
An iridium-catalyzed regioselective sequential silylation and borylation of heteroarenes was developed, which represents a rare example of unsymmetrical intermolecular C-H bond difunctionalization through the introduction of two different functionalities during a one-pot transformation. Although the substrate scope for the dehydrogenative silylation of heteroarenes has been limited mainly to electron-rich five-membered rings, the current reaction proceeds with both electron-rich and electron-deficient heteroarenes with the aid of heteroatom-directing C-H bond activation. The regioselectivity of the second borylation was controlled by both steric factors and the electronic effect of the silyl group installed in the first step. In combination with the classic cross-coupling reaction, this method provides rapid access to multisubstituted heteroarenes.
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Affiliation(s)
- Masahito Murai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Naoki Nishinaka
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
| | - Kazuhiko Takai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama, 700-8530, Japan
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16
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Murai M, Nishinaka N, Takai K. Iridium-Catalyzed Sequential Silylation and Borylation of Heteroarenes Based on Regioselective C−H Bond Activation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801229] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Masahito Murai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka, Kita-ku Okayama 700-8530 Japan
| | - Naoki Nishinaka
- Division of Applied Chemistry, Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka, Kita-ku Okayama 700-8530 Japan
| | - Kazuhiko Takai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology; Okayama University; 3-1-1 Tsushimanaka, Kita-ku Okayama 700-8530 Japan
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17
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Rysak V, Descamps-Mandine A, Simon P, Blanchard F, Burylo L, Trentesaux M, Vandewalle M, Collière V, Agbossou-Niedercorn F, Michon C. Selective ligand-free cobalt-catalysed reduction of esters to aldehydes or alcohols. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00728d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Activated cobalt metal salts are effective and versatile catalysts for the chemoselective reduction of esters to aldehydes or alcohols through hydrosilylation reaction.
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Affiliation(s)
| | - Armel Descamps-Mandine
- Centre de Microcaractérisation R. Castaing
- Univ. Toulouse III – Paul Sabatier
- CNRS UMS3623
- 31400 Toulouse
- France
| | | | | | | | | | | | - Vincent Collière
- Laboratoire de Chimie de Coordination UPR8241 CNRS
- 31077 Toulouse Cedex 4
- France
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18
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Skrodzki M, Witomska S, Pawluć P. Sodium triethylborohydride as a catalyst for the dehydrogenative silylation of terminal alkynes with hydrosilanes. Dalton Trans 2018; 47:5948-5951. [DOI: 10.1039/c8dt00684a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Sodium triethylborohydride has been found to be a highly selective catalyst for the dehydrogenative silylation of aromatic and aliphatic alkynes with hydrosilanes.
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Affiliation(s)
- Maciej Skrodzki
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
- Center for Advanced Technologies
| | - Samanta Witomska
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
- Center for Advanced Technologies
| | - Piotr Pawluć
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
- Center for Advanced Technologies
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19
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Geier SJ, Vogels CM, Mellonie NR, Daley EN, Decken A, Doherty S, Westcott SA. The Phosphinoboration ofN-Heterocycles. Chemistry 2017; 23:14485-14499. [DOI: 10.1002/chem.201702203] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Indexed: 01/08/2023]
Affiliation(s)
- Stephen J. Geier
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Niall R. Mellonie
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU England
| | - Erika N. Daley
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Andreas Decken
- Department of Chemistry; University of New Brunswick; Fredericton NB E3B 5A3 Canada
| | - Simon Doherty
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU England
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
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20
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Park S, Chang S. Katalytische Desaromatisierung von N-Heteroarenen mit Silicium- und Borverbindungen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612140] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sehoon Park
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science, IBS, Daejeon; 305-701 Südkorea
- Department of Chemistry; Korea Advanced Institute of Science & Technology, KAIST; Daejeon 305-701 Südkorea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science, IBS, Daejeon; 305-701 Südkorea
- Department of Chemistry; Korea Advanced Institute of Science & Technology, KAIST; Daejeon 305-701 Südkorea
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21
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Park S, Chang S. Catalytic Dearomatization of N-Heteroarenes with Silicon and Boron Compounds. Angew Chem Int Ed Engl 2017; 56:7720-7738. [DOI: 10.1002/anie.201612140] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/31/2017] [Indexed: 01/15/2023]
Affiliation(s)
- Sehoon Park
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science, IBS, Daejeon; 305-701 South Korea
- Department of Chemistry; Korea Advanced Institute of Science & Technology, KAIST; Daejeon 305-701 South Korea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science, IBS, Daejeon; 305-701 South Korea
- Department of Chemistry; Korea Advanced Institute of Science & Technology, KAIST; Daejeon 305-701 South Korea
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22
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Bromination of quinoxaline and derivatives: Effective synthesis of some new brominated quinoxalines. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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23
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Chardon A, Mohy El Dine T, Legay R, De Paolis M, Rouden J, Blanchet J. Borinic Acid Catalysed Reduction of Tertiary Amides with Hydrosilanes: A Mild and Chemoselective Synthesis of Amines. Chemistry 2017; 23:2005-2009. [DOI: 10.1002/chem.201604802] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Aurélien Chardon
- Normandie Univ.; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
| | | | - Rémi Legay
- Normandie Univ.; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
| | - Michaël De Paolis
- COBRA, IRCOF, CNRS UMR 6014 & FR 3038; Université de Rouen et INSA de Rouen; 7682 Mt. St. Aignan France
| | - Jacques Rouden
- Normandie Univ.; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
| | - Jérôme Blanchet
- Normandie Univ.; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
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24
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Zaranek M, Witomska S, Patroniak V, Pawluć P. Unexpected catalytic activity of simple triethylborohydrides in the hydrosilylation of alkenes. Chem Commun (Camb) 2017; 53:5404-5407. [DOI: 10.1039/c7cc01531c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly regioselective hydrosilylation of olefins with aryl- and alkoxysilanes has been developed using a simple sodium triethylborohydride.
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Affiliation(s)
- M. Zaranek
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
| | - S. Witomska
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
| | - V. Patroniak
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
| | - P. Pawluć
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
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25
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Chen X, Lu Z. Iminophenyl Oxazolinylphenylamine for Enantioselective Cobalt-Catalyzed Hydrosilylation of Aryl Ketones. Org Lett 2016; 18:4658-61. [DOI: 10.1021/acs.orglett.6b02260] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xu Chen
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Zhan Lu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
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26
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The cobalt(II) complex of a new tridentate Schiff-base ligand as a catalyst for hydrosilylation of olefins. CATAL COMMUN 2016. [DOI: 10.1016/j.catcom.2016.02.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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27
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Luca OR, Fenwick AQ. Organic reactions for the electrochemical and photochemical production of chemical fuels from CO2 – The reduction chemistry of carboxylic acids and derivatives as bent CO2 surrogates. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 152:26-42. [DOI: 10.1016/j.jphotobiol.2015.04.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 04/10/2015] [Accepted: 04/16/2015] [Indexed: 11/25/2022]
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28
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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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29
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Abstract
This Perspective article reviews the recent developments in reduction reactions catalysed by main-group element compounds.
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Affiliation(s)
- K. Revunova
- Chemistry Department
- Brock University
- Ontario
- Canada
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30
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Roy SR, Sau SC, Mandal SK. Chemoselective Reduction of the Carbonyl Functionality through Hydrosilylation: Integrating Click Catalysis with Hydrosilylation in One Pot. J Org Chem 2014; 79:9150-60. [DOI: 10.1021/jo501505j] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Sudipta Raha Roy
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741252, India
| | - Samaresh Chandra Sau
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741252, India
| | - Swadhin K. Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741252, India
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31
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Blondiaux E, Cantat T. Efficient metal-free hydrosilylation of tertiary, secondary and primary amides to amines. Chem Commun (Camb) 2014; 50:9349-52. [DOI: 10.1039/c4cc02894e] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrosilylation of secondary and tertiary amides to amines is described using catalytic amounts of B(C6F5)3. The organic catalyst enables the reduction of amides with cost-efficient, non-toxic and air stable PMHS and TMDS hydrosilanes. The methodology was successfully extended to the more challenging reduction of primary amides.
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