1
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Kranidiotis-Hisatomi N, Oestreich M. Enantio- and Regioconvergent Nickel-Catalyzed Allylic Substitution of Racemic α- or γ-Silylated Allylic Bromides with Benzylzinc Reagents. Org Lett 2022; 24:4987-4991. [PMID: 35776983 DOI: 10.1021/acs.orglett.2c02076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
An enantio- and regioconvergent nickel-catalyzed benzylation of racemic silylated allylic electrophiles with benzylzinc nucleophiles is reported. The key feature of this method is that the homocoupling pathways of both the nucleophile and the electrophile are minimized. A diverse set of electronically modified benzylzinc reagents was tolerated. The vinylsilane products with allylic stereocenters were formed in moderate to high yields with high enantioselectivities. The regioconvergence is the result of the steering effect of the silyl group.
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Affiliation(s)
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17, Juni 115, 10623 Berlin, Germany
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2
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Deepa M, Uthayanila S, Ganesh GS, Priya RS, Karthikeyan P. Excellent Eco-friendly Selective Alcohols Oxidation by an Acid Functionalized
Imidazolium Based Ionic Liquid. CURRENT ORGANOCATALYSIS 2022. [DOI: 10.2174/2213337208666210602152837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Aims:
A green route for the oxidation of alcohols to corresponding carbonyl compounds in room temperature ionic liquid ([CEMIM]BH4) was developed by using hydrogen peroxide as the oxygen source. In aqueous solution at room temperature, 0.2 mol% of ([CEMIM]BH4) showed excellent catalytic properties for selective oxidation of aromatic and aliphatic alcohols
Background:
One of the vital reactions in organic synthesis is the oxidation of alcohols to carbonyl compounds. In particular, the conversion of primary alcohols to aldehydes has received a variety of applications as they are used as intermediates in fine chemicals mostly for the perfume industry.
Objective:
In the present work, we have reported an effective green route for the selective oxidation of alcohols to the carbonyl compounds using peroxide in an ionic liquid 1-carboxyethyl-3-methyl-imidazolium tetrahydroborate ([CEMIM]BH4)
Methods::
A mixture of alcohol (2 mmol), ([CEMIM]BH4) (0.2 mol%), H2O2 (2 mmol) were stirred thoroughly with the help of a magnetic stirrer for 10 min at ambient temperature
Results:
The catalytic activity of ([CEMIM]BH4) is very effective, which reflects its good solvating nature during the oxidation.
Conclusion:
In conclusion, the series of experiments described represents a useful method for the oxidation of primary and secondary alcohols to carbonyl compounds at room temperature. The catalyst can be easily prepared and is therefore extremely cost-effective. The rapid reaction times for the substrates mean a large number of materials may be screened in parallel over a short period of time.
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Affiliation(s)
- Manickam Deepa
- PG and Research Department of Chemistry Pachaiyappas College Campus, University of Madras Chennai-600 030,
Tamilnadu, India
| | - Selvarasu Uthayanila
- Department of Chemistry, Pachaiyappas College for Women Campus, University of Madras,
Kanchipuram- 631501 Tamilnadu, India
| | - Gopalsamy Selvaraj Ganesh
- PG and Research Department of Chemistry Pachaiyappas College Campus, University of Madras Chennai-600 030,
Tamilnadu, India
| | - Ramasamy Shanmuga Priya
- PG and Research Department of Chemistry Pachaiyappas College Campus, University of Madras Chennai-600 030,
Tamilnadu, India
| | - Parasuraman Karthikeyan
- PG and Research Department of Chemistry Pachaiyappas College Campus, University of Madras Chennai-600 030,
Tamilnadu, India
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3
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Olding A, Tang M, Ho CC, Fuller RO, Bissember AC. Rhenium-catalysed reactions in chemical synthesis: selected case studies. Dalton Trans 2022; 51:3004-3018. [DOI: 10.1039/d1dt04205j] [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
This Perspective presents and discusses a selection of examples that reinforce the enabling and distinctive reactivity provided by homogeneous rhenium catalysis in chemical synthesis. Specifically, the ability for lower oxidation...
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4
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Kranidiotis‐Hisatomi N, Yi H, Oestreich M. Enantio- and Regioconvergent Nickel-Catalyzed C(sp 3 )-C(sp 3 ) Cross-Coupling of Allylic Electrophiles Steered by a Silyl Group. Angew Chem Int Ed Engl 2021; 60:13652-13655. [PMID: 33822445 PMCID: PMC8251714 DOI: 10.1002/anie.202102233] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/01/2021] [Indexed: 12/15/2022]
Abstract
A two‐step sequence for the enantio‐ and diastereoselective synthesis of exclusively alkyl‐substituted acyclic allylic systems with a stereocenter in the allylic position is reported. The asymmetric induction and the site selectivity are controlled in an enantio‐ and regioconvergent nickel‐catalyzed C(sp3)−C(sp3) cross‐coupling of regioisomeric mixtures of racemic α‐/γ‐silylated allylic halides and primary alkylzinc reagents. The silyl group steers the allylic displacement towards the formation of the vinylsilane regioisomer, and the resulting C(sp2)−Si bond serves as a linchpin for the installation of various C(sp3) substituents in a subsequent step.
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Affiliation(s)
| | - Hong Yi
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
| | - Martin Oestreich
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
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5
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Kranidiotis‐Hisatomi N, Yi H, Oestreich M. Enantio‐ und regiokonvergente, nickelkatalysierte C(sp
3
)‐C(sp
3
)‐Kreuzkupplung von allylischen Elektrophilen gelenkt durch eine Silylgruppe. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Hong Yi
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
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6
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Liu J, Zhang S, Luan Z, Liu Y, Ke Z. Ruthenium Catalyzed Selective Acceptorless Dehydrogenation of Allylic Alcohols to α, β-Unsaturated Carbonyls. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202107037] [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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7
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Dai X, Shi F. N-Alkyl amide synthesis via N-alkylation of amides with alcohols. Org Biomol Chem 2019; 17:2044-2054. [DOI: 10.1039/c8ob03091j] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present review summarizes the recent development of N-alkylation of amides with alcohols according to the classification of catalysts.
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Affiliation(s)
- Xingchao Dai
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Feng Shi
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
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8
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Fyfe JWB, Kabia OM, Pearson CM, Snaddon TN. Si-Directed regiocontrol in asymmetric Pd-catalyzed allylic alkylations using C1-ammonium enolate nucleophiles. Tetrahedron 2018; 74:5383-5391. [PMID: 30559533 DOI: 10.1016/j.tet.2018.04.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cooperative catalysis enables the direct enantioselective α-allylation of linear prochiral esters using Si-substituted allyl electrophiles. The Si-substituent directs the regioselectivity of enantioselective bond formation and provides products containing synthetically versatile pentafluorophenyl ester and vinylsilane moieties. Critical to the efficacy of this process was the recognition that the ancillary ligand on palladium could be altered to prevent formation of a deleterious ether by-product, whilst retaining enantioselectivity through the Lewis base catalyst. Flexibility such as this is unique to cooperative catalysis events and provides efficient access to an array of enantioenriched products that are orthogonally functionalized and easily modified.
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Affiliation(s)
- James W B Fyfe
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, Indiana 47405, United States
| | - Omaru M Kabia
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, Indiana 47405, United States
| | - Colin M Pearson
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, Indiana 47405, United States
| | - Thomas N Snaddon
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, Indiana 47405, United States
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9
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Liu QL, Chen W, Jiang QY, Bai XF, Li Z, Xu Z, Xu LW. A d
-Camphor-Based Schiff Base as a Highly Efficient N,P Ligand for Enantioselective Palladium-Catalyzed Allylic Substitutions. ChemCatChem 2016. [DOI: 10.1002/cctc.201600084] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Qiao-Ling Liu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No 1378, Wenyi West Road, Science Park of HZNU Hangzhou P.R. China
| | - Weifeng Chen
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No 1378, Wenyi West Road, Science Park of HZNU Hangzhou P.R. China
| | - Qun-Ying Jiang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No 1378, Wenyi West Road, Science Park of HZNU Hangzhou P.R. China
| | - Xing-Feng Bai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No 1378, Wenyi West Road, Science Park of HZNU Hangzhou P.R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Lanzhou Institute of Chemical Physics (CAS) and; University of the Chinese Academy of Sciences; P.R. China
| | - Zhifang Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No 1378, Wenyi West Road, Science Park of HZNU Hangzhou P.R. China
| | - Zheng Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No 1378, Wenyi West Road, Science Park of HZNU Hangzhou P.R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No 1378, Wenyi West Road, Science Park of HZNU Hangzhou P.R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Lanzhou Institute of Chemical Physics (CAS) and; University of the Chinese Academy of Sciences; P.R. China
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10
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Reid JP, McAdam CA, Johnston AJS, Grayson MN, Goodman JM, Cook MJ. Base-mediated cascade rearrangements of aryl-substituted diallyl ethers. J Org Chem 2015; 80:1472-98. [PMID: 25514457 DOI: 10.1021/jo502403n] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Two base-mediated cascade rearrangement reactions of diallyl ethers were developed leading to selective [2,3]-Wittig-oxy-Cope and isomerization-Claisen rearrangements. Both diaryl and arylsilyl-substituted 1,3-substituted propenyl substrates were examined, and each exhibits unique reactivity and different reaction pathways. Detailed mechanistic and computational analysis was conducted, which demonstrated that the role of the base and solvent was key to the reactivity and selectivity observed. Crossover experiments also suggest that these reactions proceed with a certain degree of dissociation, and the mechanistic pathway is highly complex with multiple competing routes.
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Affiliation(s)
- Jolene P Reid
- School of Chemistry and Chemical Engineering, Queen's University Belfast , Belfast BT9 5AG, Northern Ireland, United Kingdom
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11
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McAdam CA, McLaughlin MG, Cook MJ. An alkyne hydrosilylation–Hiyama coupling approach to highly functionalised 1,3-dienes. Org Chem Front 2015. [DOI: 10.1039/c5qo00002e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A high yielding and completely stereoselective hydrosilylation–Hiyama protocol has been established for the synthesis of highly functionalised E,E-dienes.
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Affiliation(s)
- Catherine A. McAdam
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast
- UK
| | - Mark G. McLaughlin
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast
- UK
| | - Matthew J. Cook
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast
- UK
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12
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Chavhan SW, McAdam CA, Cook MJ. Silicon-Directed Rhenium-Catalyzed Allylic Substitutions with N-Hydroxycarbamates, N-Hydroxysulfonamides, and Hydroxamic Acids. J Org Chem 2014; 79:11234-40. [DOI: 10.1021/jo501992p] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sanjay W. Chavhan
- School
of Chemistry and Chemical
Engineering, Queen’s University Belfast, Belfast BT9 5AG, Northern Ireland
| | - Catherine A. McAdam
- School
of Chemistry and Chemical
Engineering, Queen’s University Belfast, Belfast BT9 5AG, Northern Ireland
| | - Matthew J. Cook
- School
of Chemistry and Chemical
Engineering, Queen’s University Belfast, Belfast BT9 5AG, Northern Ireland
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