1
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Yu X, Ji X, Shang D, Yu L, Chan PWH, Rao W. Rhodium(I)-Catalyzed Cascade Annulation of 1, n-Diynyl Nitrones to 3,4-Fused Fully Substituted Furans. Org Lett 2024; 26:6631-6636. [PMID: 39087730 DOI: 10.1021/acs.orglett.4c02287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
A method for the assembly of fully substituted furans containing a 3,4-fused 5-8-membered carbocycle, heterocycle, or spirocycle from rhodium(I)-catalyzed and 1,1,1,3,3,3-hexafluoroisopropanol (HFIP)-assisted cascade annulation of 1,n-diynyl nitrones has been developed.
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Affiliation(s)
- Xiangdong Yu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xiaowen Ji
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Dandan Shang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Lei Yu
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | | | - Weidong Rao
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
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2
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Gunasekera S, Pryyma A, Jung J, Greenwood R, Patrick BO, Perrin DM. Diphenylphosphinylhydroxylamine (DPPH) Affords Late-Stage S-imination to access free-NH Sulfilimines and Sulfoximines. Angew Chem Int Ed Engl 2024; 63:e202314906. [PMID: 38289976 DOI: 10.1002/anie.202314906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/01/2024]
Abstract
Sulfilimines, as potential aza-isosteres of sulfoxides, are valued as building blocks, auxiliaries, ligands, bioconjugation handles, and as precursors to versatile S(VI) scaffolds including sulfoximines and sulfondiimines. Here, we report a thioether imination methodology that exploits O-(diphenylphosphinyl)hydroxyl amine (DPPH). Under mild, metal-free, and biomolecule-compatible conditions, DPPH enables late-stage S-imination on peptides, natural products, and a clinically trialled drug, and shows both excellent chemoselectivity and broad functional group tolerance. This methodological report is extended to an efficient and high-yielding one-pot reaction for accessing free-NH sulfoximines with diverse substrates including ones of potential clinical importance. In the presence of a rhodium catalyst, sulfoxides are S-iminated in higher yields to afford free-NH sulfoximines. S-imination was validated on an oxidatively delicate amatoxin to give sulfilimine and sulfoximine congeners. Interestingly, these new sulfilimine and sulfoximine-amatoxins show cytotoxicity. This method is further extended to create sulfilimine and sulfoximine-Fulvestrant and buthionine analogues.
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Affiliation(s)
- Shanal Gunasekera
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
| | - Alla Pryyma
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
| | - Jimin Jung
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
| | - Rebekah Greenwood
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
| | - Brian O Patrick
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
| | - David M Perrin
- Chemistry Department, University of British Columbia, 2036 Main Mall, V6T 1Z1, Vancouver, B.C., Canada
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3
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Bakhtiarian M, Khodaei MM. Introducing a protic ionic liquid from aminoethyl piperazine and triflic acid immobilized on pectin as a reusable nanocatalyst for the selective Schmidt synthesis of nitriles. Int J Biol Macromol 2024; 256:128445. [PMID: 38029916 DOI: 10.1016/j.ijbiomac.2023.128445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/24/2023] [Accepted: 11/23/2023] [Indexed: 12/01/2023]
Abstract
Preparation of reusable protic ionic liquid, triflic acid-immobilized aminoethyl piperazine-modified pectin (Pec-AEP-TfOH), with excellent activity and selectivity in modified Schmidt synthesis of nitriles from aldehydes and Si(CH3)3N3 has been described. The structure of the catalyst was characterized using FT-IR, XRD, FE-SEM, EDX-mapping, and TGA-DTA. The reaction demonstrated a broad substrate scope for a variety of benzaldehyde derivatives with electron withdrawing/donating substituents and heterocyclic aldehydes with yields between 85 and 96 % at room temperature. Also, the Pec-AEP-TfOH showed an excellent selectivity for the nitriles in which no formanilide was obtained. Furthermore, the Pec-AEP-TfOH revealed a remarkable chemoselectivity for aldehydes in the presence of acids or ketones. It is worth noting that TfOH as a precious superacid was immobilized for the first time in the selective Schmidt synthesis of nitriles to improve the eco-friendliness and economic efficiency of the process. Furthermore, the catalyst was cost-effective, metal-free, safe, scalable, and reusable (5 times) and its heterogeneity was confirmed by hot-filtration test.
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Affiliation(s)
- Mohsen Bakhtiarian
- Department of Organic Chemistry, Razi University, 67149-67346 Kermanshah, Iran
| | - Mohammad Mehdi Khodaei
- Department of Organic Chemistry, Razi University, 67149-67346 Kermanshah, Iran; Nanoscience and Nanotechnology Research Center (NNRC), Razi University, 67149-67346 Kermanshah, Iran.
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4
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Sandvoß A, Wahl JM. From Cycloalkanols to Heterocycles via Nitrogen Insertion. Org Lett 2023; 25:5795-5799. [PMID: 37503963 DOI: 10.1021/acs.orglett.3c02048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
A variety of cyclic alcohols are found to undergo nitrogen insertion by subjection to O-mesitylsulfonylhydroxylamine. Critical to a successful process is the use of fluorinated alcoholic solvents, which ensures sufficient substrate activation to allow engagement with the ambiphilic aminating agent. This transition-metal-free nitrogen insertion provides access to a variety of medicinally relevant heterocycles such as pyrrolidenes, quinolines, and benzazepines (24 examples). Furthermore, combination with a photochemical Norrish-Yang-type cyclization allows an unprecedented access to indoles from ortho-substituted acetophenones.
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Affiliation(s)
- Alexander Sandvoß
- Department Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Johannes M Wahl
- Department Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
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5
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Oxygen transfer reaction of haloalkyl amides catalyzed by phenylboronic acid. Commun Chem 2023; 6:29. [PMID: 36765132 PMCID: PMC9918490 DOI: 10.1038/s42004-023-00824-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 01/30/2023] [Indexed: 02/12/2023] Open
Abstract
Nitrile derivatives are important building blocks in organic synthesis. Herein, we report the serendipitous discovery of an oxygen transfer reaction that produces hydroxyalkyl nitriles from the sequential dehydration and hydrolysis of haloalkyl amides. Product yields of up to 91% were achieved, and the phenylboronic acid was recovered as triphenylboroxine. The triphenylboroxine was reused as a catalyst without any loss of catalytic activity. A probable catalytic pathway was proposed based on control experiments and DFT calculations.
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6
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Jiang Y, Wang B, Liu D, Xia D, Liu Z, Li L, Deng G, Yang X. Aryl acrylonitriles synthesis enabled by palladium-catalyzed α-alkenylation of arylacetonitriles with vinyl halides/triflates. Front Chem 2022; 10:1091566. [PMID: 36590282 PMCID: PMC9798101 DOI: 10.3389/fchem.2022.1091566] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
Aryl acrylonitriles are an important subclass of acrylonitriles in the medicinal chemistry and pharmaceutical industry. Herein, an efficient synthesis of aryl acrylonitrile derivatives using a Palladium/NIXANTPHOS-based catalyst system was developed. This approach furnishes a variety of substituted and functionalized aryl acrylonitriles (up to 95% yield). The scalability of the transformation and the synthetic versatility of aryl acrylonitrile were demonstrated.
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Affiliation(s)
| | | | | | | | | | | | - Guogang Deng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Pharmacy, Yunnan University, Kunming, China
| | - Xiaodong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Pharmacy, Yunnan University, Kunming, China
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7
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Wang J, Yang X, Li N, Wang L. NH
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Br‐Promoted Single‐Step and Transition‐Metal‐Free Conversion of Aldehydes to Nitriles in Ammonia Water. ChemistrySelect 2022. [DOI: 10.1002/slct.202203982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Jin Wang
- School of Pharmacy Yancheng Teachers University Yancheng 224007 Jiangsu Province China
| | - Xiao‐Qin Yang
- School of Pharmacy Yancheng Teachers University Yancheng 224007 Jiangsu Province China
| | - Na Li
- School of Pharmacy Yancheng Teachers University Yancheng 224007 Jiangsu Province China
| | - Li.‐Li Wang
- School of Pharmacy Yancheng Teachers University Yancheng 224007 Jiangsu Province China
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8
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Jin S, Zhao X, Ma D. Divergent Total Syntheses of Napelline-Type C20-Diterpenoid Alkaloids: (-)-Napelline, (+)-Dehydronapelline, (-)-Songorine, (-)-Songoramine, (-)-Acoapetaldine D, and (-)-Liangshanone. J Am Chem Soc 2022; 144:15355-15362. [PMID: 35948501 DOI: 10.1021/jacs.2c06738] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The napelline-type alkaloids possess an azabicyclo[3.2.1]octane moiety and an ent-kaurane-type tetracyclic skeleton (6/6/6/5) along with varied oxidation patterns embedded in the compact hexacyclic framework. Herein, we disclose a divergent entry to napelline-type alkaloids that hinges on convergent assembly of the ent-kaurane core using a diastereoselective intermolecular Cu-mediated conjugate addition and subsequent intramolecular Michael addition reaction as well as rapid construction of the azabicyclo[3.2.1]octane motif via an intramolecular Mannich cyclization. The power of this strategy has been demonstrated through efficient asymmetric total syntheses of eight napelline-type alkaloids, including (-)-napelline, (-)-12-epi-napelline, (+)-dehydronapelline, (+)-12-epi-dehydronapelline, (-)-songorine, (-)-songoramine, (-)-acoapetaldine D, and (-)-liangshanone.
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Affiliation(s)
- Shicheng Jin
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Xiangbo Zhao
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Dawei Ma
- State Key Laboratory of Bioorganic & Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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9
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Sulfur-promoted, one-pot, and metal-free conversion of aromatic aldehydes to nitriles using an inorganic ammonium salt as the nitrogen source. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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10
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Tu Y, Shi P, Bolm C. 2‐Formyl Benzamides from an
N
‐Phthalimidoyl Sulfoximine. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yongliang Tu
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
| | - Peng Shi
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
| | - Carsten Bolm
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 D-52074 Aachen Germany
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11
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Bariya D, Mishra S. Lewis Acid Catalyzed Nitrile Synthesis from Aldehyde. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Xu L, Hu Y, Zhu X, He L, Wu Q, Li C, Xia C, Liu C. Momentary Clicking Nitrile Synthesis Enabled by an Aminoazanium Reagent. Org Chem Front 2022. [DOI: 10.1039/d2qo00560c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Achieving fast and selective functional group interconversion is crucial for improving synthetic efficiency in nowadays chemical science. In this context, we report a momentary and selective Schmidt-type nitrile synthesis. The...
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13
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Sahoo S, Pal S. Copper-Catalyzed One-Pot Synthesis of Quinazolinones from 2-Nitrobenzaldehydes with Aldehydes: Application toward the Synthesis of Natural Products. J Org Chem 2021; 86:18067-18080. [PMID: 34813342 DOI: 10.1021/acs.joc.1c02343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A novel, efficient, and atom-economical approach for the construction of quinazolinones from 2-nitrobenzaldehydes has been unveiled via copper-catalyzed nitrile formation, hydrolysis, and reduction in one pot for the first time. In this reaction, urea is used as a source of nitrogen for nitrile formation, hydrazine hydrate is used for both the reduction of the nitro group and the hydrolysis of nitrile, and atmospheric oxygen is used as the sole oxidant. The method portrays a wide substrate scope with good functional group tolerances. Moreover, this method was applied for the synthesis of schizocommunin, tryptanthrin, phaitanthrin-A, phaitanthrin-B, and 8H-quinazolino[4,3-b]quinazolin-8-one.
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Affiliation(s)
- Subrata Sahoo
- Organic Chemistry Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Odisha 752050, India
| | - Shantanu Pal
- Organic Chemistry Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Odisha 752050, India
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14
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Efficient preparation of salicylonitrile from methyl salicylate over supported boron phosphate catalyst in a continuous fixed bed reactor. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01879-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Cheewawisuttichai T, Hurst RD, Brichacek M. Transformation of aldehydes into nitriles in an aqueous medium using O-phenylhydroxylamine as the nitrogen source. Carbohydr Res 2021; 502:108282. [PMID: 33761407 DOI: 10.1016/j.carres.2021.108282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 03/03/2021] [Accepted: 03/03/2021] [Indexed: 11/16/2022]
Abstract
The conversion of an aldehyde into a nitrile can be efficiently performed using O-phenylhydroxylamine hydrochloride in buffered aqueous solutions. The reported method is specifically optimized for aqueous-soluble substrates including carbohydrates. Several reducing sugars including monosaccharides, disaccharides, and silyl-protected saccharides were transformed into cyanohydrins in high yields. The reaction conditions are also suitable for the formation of nitriles from various types of hydrophobic aldehyde substrates. Furthermore, cyanide can be eliminated from cyanohydrins, analogous to the Wohl degradation, by utilizing a readily-removed weakly basic resin as a promoter.
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Affiliation(s)
| | - Robert D Hurst
- Department of Chemistry, University of Maine, Orono, ME, USA
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16
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Danahy KE, Styduhar ED, Fodness AM, Heckman LM, Jamison TF. On-Demand Generation and Use in Continuous Synthesis of the Ambiphilic Nitrogen Source Chloramine. Org Lett 2020; 22:8392-8395. [PMID: 33086788 DOI: 10.1021/acs.orglett.0c03021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we demonstrate the on-demand synthesis of chloramine from aqueous ammonia and sodium hypochlorite solutions, and its subsequent utilization as an ambiphilic nitrogen source in continuous-flow synthesis. Despite its advantages in cost and atom economy, chloramine has not seen widespread use in batch synthesis due to its unstable and hazardous nature. Continuous-flow chemistry, however, provides an excellent platform for generating and handling chloramine in a safe, reliable, and inexpensive manner. Unsaturated aldehydes are converted to valuable aziridines and nitriles, and thioethers are converted to sulfoxides, in moderate to good yields and exceedingly short reaction times. In this telescoped process, chloramine is generated in situ and immediately used, providing safe and efficient conditions for reaction scale-up while mitigating the issue of its decomposition over time.
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Affiliation(s)
- Kelley E Danahy
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 01239, United States
| | - Evan D Styduhar
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 01239, United States
| | - Aria M Fodness
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 01239, United States
| | - Laurel M Heckman
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 01239, United States
| | - Timothy F Jamison
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 01239, United States
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17
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Mudshinge SR, Potnis CS, Xu B, Hammond GB. HCl•DMPU-Assisted One-pot and Metal-free Conversion of Aldehydes to Nitriles. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2020; 22:4161-4164. [PMID: 33795972 PMCID: PMC8009297 DOI: 10.1039/d0gc00757a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We report an efficient HCl•DMPU assisted one-pot conversion of aldehydes into nitriles. The use of HCl•DMPU as both an acidic source as well as a non-nucleophilic base constitutes an environmentally mild alternative for the preparation of nitriles. Our protocol proceeds smoothly without the use of toxic reagents and metal catalysts. Diverse functionalized aromatic, aliphatic and allylic aldehydes incorporating various functional groups were successfully converted to nitriles in excellent to quantitative yields. This protocol is characterized by a broad substrate scope, mild reaction conditions, and high scalability.
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Affiliation(s)
- Sagar R Mudshinge
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Chinmay S Potnis
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Bo Xu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai, China
| | - Gerald B Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
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18
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Fang WY, Qin HL. Cascade Process for Direct Transformation of Aldehydes (RCHO) to Nitriles (RCN) Using Inorganic Reagents NH 2OH/Na 2CO 3/SO 2F 2 in DMSO. J Org Chem 2019; 84:5803-5812. [PMID: 30868885 DOI: 10.1021/acs.joc.8b03164] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A simple, mild, and practical process for direct conversion of aldehydes to nitriles was developed feathering a wide substrate scope and great functional group tolerability (52 examples, over 90% yield in most cases) using inorganic reagents (NH2OH/Na2CO3/SO2F2) in DMSO. This method allows for transformations of readily available, inexpensive, and abundant aldehydes to highly valuable nitriles in a pot, atom, and step-economical manner without transition metals. This protocol will serve as a robust tool for the installation of cyano-moieties to complicated molecules.
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Affiliation(s)
- Wan-Yin Fang
- State Key Laboratory of Silicate Materials for Architectures and School of Chemistry, Chemical Engineering, and Life Science , Wuhan University of Technology , 205 Luoshi Road , Wuhan 430070 , P. R. China
| | - Hua-Li Qin
- State Key Laboratory of Silicate Materials for Architectures and School of Chemistry, Chemical Engineering, and Life Science , Wuhan University of Technology , 205 Luoshi Road , Wuhan 430070 , P. R. China
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19
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Chen P, Zhang QQ, Guo J, Chen LL, Wang YB, Zhang X. An effective preparation of both 1,3-diketones and nitriles from alkynones with oximes as hydroxide sources. Org Biomol Chem 2019; 16:8336-8344. [PMID: 30206631 DOI: 10.1039/c8ob01861h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An effective phosphine-catalyzed protocol has been established for the syntheses of 1,3-diketones and nitriles from alkynones with oximes as hydroxide surrogates. This method features the use of a phosphine catalyst, compatibility with various functional groups and ambient temperature, which makes this approach very practical. A plausible mechanism was proposed.
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Affiliation(s)
- Pei Chen
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China.
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20
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Gurjar J, Bater J, Fokin VV. Sulfuryl Fluoride Mediated Conversion of Aldehydes to Nitriles. Chemistry 2019; 25:1906-1909. [DOI: 10.1002/chem.201805175] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Jitendra Gurjar
- University of Southern California Bridge Institute and Loker Hydrocarbon Research Institute 1002 Childs Way Los Angeles CA 90089-3502 USA
| | - Jorick Bater
- University of Southern California Bridge Institute and Loker Hydrocarbon Research Institute 1002 Childs Way Los Angeles CA 90089-3502 USA
| | - Valery V. Fokin
- University of Southern California Bridge Institute and Loker Hydrocarbon Research Institute 1002 Childs Way Los Angeles CA 90089-3502 USA
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21
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Lekkala R, Lekkala R, Moku B, Rakesh KP, Qin HL. Applications of sulfuryl fluoride (SO2F2) in chemical transformations. Org Chem Front 2019. [DOI: 10.1039/c9qo00747d] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A number of novel methodologies concerning the chemical, biological and medicinal applications of sulfuryl fluoride (SO2F2) gas have dramatically improved year by year.
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Affiliation(s)
- Ravindar Lekkala
- State Key Laboratory of Silicate Materials for Architectures
- and School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
| | - Revathi Lekkala
- State Key Laboratory of Silicate Materials for Architectures
- and School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
| | - Balakrishna Moku
- State Key Laboratory of Silicate Materials for Architectures
- and School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
| | - K. P. Rakesh
- State Key Laboratory of Silicate Materials for Architectures
- and School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
| | - Hua-Li Qin
- State Key Laboratory of Silicate Materials for Architectures
- and School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
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22
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Yi W, Liu QY, Fang XX, Lou SC, Liu GQ. Preparation of oxazolines and oxazoles via a PhI(OAc) 2-promoted cyclization of N-propargylamides. Org Biomol Chem 2018; 16:7012-7018. [PMID: 30232498 DOI: 10.1039/c8ob01474d] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A metal-free cyclization of N-propargylamides for the synthesis of various oxazolines and oxazoles via a 5-exo-dig process is presented. Using (diacetoxyiodo)benzene (PIDA) as a reaction promoter and lithium iodide (LiI) as an iodine source, intramolecular iodooxygenation of N-propargylamides proceeded readily, leading to the corresponding (E)-5-iodomethylene-2-oxazolines in good to excellent isolated yields. In addition, using the PhI(OAc)2/LiI system, N-propargylamides can be converted to the corresponding oxazole-5-carbaldehydes in the presence of oxygen under visible light irradiation. The resulting products can be further converted into various oxazoline and oxazole derivatives after simple derivatizations, and this method ultimately offers an efficient route to a variety of biologically active structures.
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Affiliation(s)
- Wei Yi
- College of Pharmacy, Nantong University, 19 Qixiu Road, Nantong 226001, People's Republic of China.
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23
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Dutta I, Yadav S, Sarbajna A, De S, Hölscher M, Leitner W, Bera JK. Double Dehydrogenation of Primary Amines to Nitriles by a Ruthenium Complex Featuring Pyrazole Functionality. J Am Chem Soc 2018; 140:8662-8666. [DOI: 10.1021/jacs.8b05009] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Indranil Dutta
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sudhir Yadav
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Abir Sarbajna
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Subhabrata De
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Markus Hölscher
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Walter Leitner
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Jitendra K. Bera
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
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24
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Ray R, Hazari AS, Lahiri GK, Maiti D. Ruthenium-Catalyzed Aerobic Oxidation of Amines. Chem Asian J 2018; 13:2138-2148. [PMID: 29345861 DOI: 10.1002/asia.201701748] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Indexed: 11/09/2022]
Abstract
Amine oxidation is one of the fundamental reactions in organic synthesis as it leads to a variety of value-added products such as oximes, nitriles, imines, and amides among many others. These products comprise the key N-containing building blocks in the modern chemical industry, and such transformations, when achieved in the presence of molecular oxygen without using stoichiometric oxidants, are much preferred as they circumvent the production of unwanted wastes. In parallel, the versatility of ruthenium catalysts in various oxidative transformations is well-documented. Herein, this review focuses on aerobic oxidation of amines specifically by using ruthenium catalysts and highlights the major achievements in this direction and challenges that still need to be addressed.
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Affiliation(s)
- Ritwika Ray
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Arijit Singha Hazari
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Goutam Kumar Lahiri
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
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25
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Liu RY, Bae M, Buchwald SL. Mechanistic Insight Facilitates Discovery of a Mild and Efficient Copper-Catalyzed Dehydration of Primary Amides to Nitriles Using Hydrosilanes. J Am Chem Soc 2018; 140:1627-1631. [PMID: 29353477 PMCID: PMC5803397 DOI: 10.1021/jacs.8b00643] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Metal-catalyzed silylative dehydration of primary amides is an economical approach to the synthesis of nitriles. We report a copper-hydride(CuH)-catalyzed process that avoids a typically challenging 1,2-siloxane elimination step, thereby dramatically increasing the rate of the overall transformation relative to alternative metal-catalyzed systems. This new reaction proceeds at ambient temperature, tolerates a variety of metal-, acid-, or base-sensitive functional groups, and can be performed using a simple ligand, inexpensive siloxanes, and low catalyst loading.
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Affiliation(s)
| | | | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
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26
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Guo W, Kuniyil R, Gómez JE, Maseras F, Kleij AW. A Domino Process toward Functionally Dense Quaternary Carbons through Pd-Catalyzed Decarboxylative C(sp3)–C(sp3) Bond Formation. J Am Chem Soc 2018; 140:3981-3987. [DOI: 10.1021/jacs.7b12608] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Wusheng Guo
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Rositha Kuniyil
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - José Enrique Gómez
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química, Universitat Autónoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Spain
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27
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Sabir S, Kumar G, Jat JL. O-Substituted hydroxyl amine reagents: an overview of recent synthetic advances. Org Biomol Chem 2018; 16:3314-3327. [DOI: 10.1039/c8ob00146d] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Reagents derived from oxygen-substituted hydroxylamine facilitate stereo- and regioselective C–N, N–N, O–N, and S–N bond-formation reactions and intra-molecular cyclizations without any expensive metal catalysts. These remarkable transformations are discussed in this review.
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Affiliation(s)
- Shekh Sabir
- Department of Chemistry
- Baba Saheb Bhimrao Ambedkar University (a Central University)
- Vidya Vihar
- Lucknow 226025
- India
| | | | - Jawahar L. Jat
- Department of Chemistry
- Baba Saheb Bhimrao Ambedkar University (a Central University)
- Vidya Vihar
- Lucknow 226025
- India
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28
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Zhang D, Huang Y, Zhang E, Yi R, Chen C, Yu L, Xu Q. Pd/Mn Bimetallic Relay Catalysis for Aerobic Aldoxime Dehydration to Nitriles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701154] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dongliang Zhang
- School of Chemistry and Chemical Engineering and Institute of Pesticide of School of Horticulture and Plant Protection; Yangzhou University; Yangzhou, Jiangsu 225002 People's Republic of China
| | - Yaping Huang
- School of Chemistry and Chemical Engineering and Institute of Pesticide of School of Horticulture and Plant Protection; Yangzhou University; Yangzhou, Jiangsu 225002 People's Republic of China
| | - Erlei Zhang
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou, Zhejiang 325035 People's Republic of China
| | - Rong Yi
- School of Chemistry and Chemical Engineering and Institute of Pesticide of School of Horticulture and Plant Protection; Yangzhou University; Yangzhou, Jiangsu 225002 People's Republic of China
| | - Chao Chen
- School of Chemistry and Chemical Engineering and Institute of Pesticide of School of Horticulture and Plant Protection; Yangzhou University; Yangzhou, Jiangsu 225002 People's Republic of China
| | - Lei Yu
- School of Chemistry and Chemical Engineering and Institute of Pesticide of School of Horticulture and Plant Protection; Yangzhou University; Yangzhou, Jiangsu 225002 People's Republic of China
| | - Qing Xu
- School of Chemistry and Chemical Engineering and Institute of Pesticide of School of Horticulture and Plant Protection; Yangzhou University; Yangzhou, Jiangsu 225002 People's Republic of China
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou, Zhejiang 325035 People's Republic of China
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29
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Affiliation(s)
- Guobing Yan
- Department of Chemistry; Lishui University; Lishui Zhejiang 323000 People's Republic of China
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 People's Republic of China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 People's Republic of China
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30
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Hyodo K, Togashi K, Oishi N, Hasegawa G, Uchida K. Brønsted Acid Catalyzed Nitrile Synthesis from Aldehydes Using Oximes via Transoximation at Ambient Temperature. Org Lett 2017; 19:3005-3008. [DOI: 10.1021/acs.orglett.7b01263] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Kengo Hyodo
- Department of Material Chemistry,
Faculty of Science and Technology, Ryukoku University, Seta, Otsu, Shiga 520-2194, Japan
| | - Kosuke Togashi
- Department of Material Chemistry,
Faculty of Science and Technology, Ryukoku University, Seta, Otsu, Shiga 520-2194, Japan
| | - Naoki Oishi
- Department of Material Chemistry,
Faculty of Science and Technology, Ryukoku University, Seta, Otsu, Shiga 520-2194, Japan
| | - Genna Hasegawa
- Department of Material Chemistry,
Faculty of Science and Technology, Ryukoku University, Seta, Otsu, Shiga 520-2194, Japan
| | - Kingo Uchida
- Department of Material Chemistry,
Faculty of Science and Technology, Ryukoku University, Seta, Otsu, Shiga 520-2194, Japan
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31
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Qi C, Peng Y, Ouyang L, Ren Y, Jiang H. Base-Promoted Addition of Arylacetonitriles to Terminal Alkynes: Regio- and Stereoselective Access to Disubstituted Acrylonitriles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Chaorong Qi
- School of Chemistry and Chemical Engineering, State Key Lab of Luminescent Materials and Devices; South China University of Technology; Guangzhou 510640 People's Republic of China
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 People's Republic of China, Fax: (+86)-20-8711-2906
| | - Youbin Peng
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 People's Republic of China, Fax: (+86)-20-8711-2906
| | - Lu Ouyang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 People's Republic of China, Fax: (+86)-20-8711-2906
| | - Yanwei Ren
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 People's Republic of China, Fax: (+86)-20-8711-2906
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 People's Republic of China, Fax: (+86)-20-8711-2906
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32
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Electrocatalytic synthesis of nitriles from aldehydes with ammonium acetate as the nitrogen source. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.168] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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33
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Fang C, Li M, Hu X, Mo W, Hu B, Sun N, Jin L, Shen Z. A practical iodine-catalyzed oxidative conversion of aldehydes to nitriles. RSC Adv 2017. [DOI: 10.1039/c6ra26435b] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A simple and efficient method for the direct synthesis of nitriles from aldehydes using ammonium acetate as the nitrogen source, iodine as the catalyst, and tert-butyl hydroperoxide (TBHP) as the oxidant was developed.
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Affiliation(s)
- Chaojie Fang
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Meichao Li
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Xinquan Hu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Weimin Mo
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Baoxiang Hu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Nan Sun
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Liqun Jin
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Zhenlu Shen
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
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34
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Direct synthesis of nitriles from aldehydes with hydroxylamine-O-sulfonic acid in acidic water. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.047] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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35
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Fang C, Li M, Hu X, Mo W, Hu B, Sun N, Jin L, Shen Z. A Mild TEMPO-Catalyzed Aerobic Oxidative Conversion of Aldehydes into Nitriles. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501130] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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36
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Motiwala HF, Yin Q, Aubé J. Improved Schmidt Conversion of Aldehydes to Nitriles Using Azidotrimethylsilane in 1,1,1,3,3,3-Hexafluoro-2-propanol. Molecules 2015; 21:E45. [PMID: 26729081 PMCID: PMC6273554 DOI: 10.3390/molecules21010045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 12/16/2015] [Accepted: 12/22/2015] [Indexed: 12/05/2022] Open
Abstract
The Schmidt reaction of aromatic aldehydes using a substoichiometric amount (40 mol %) of triflic acid is described. Low catalyst loading was enabled by a strong hydrogen-bond-donating solvent hexafluoro-2-propanol (HFIP). This improved protocol tolerates a broad scope of aldehydes with diverse functional groups and the corresponding nitriles were obtained in good to high yields without the need for aqueous work up.
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Affiliation(s)
- Hashim F Motiwala
- Department of Medicinal Chemistry, Delbert M. Shankel Structural Biology Center, University of Kansas, 2034 Becker Drive, West Campus, Lawrence, KS 66047, USA.
| | - Qin Yin
- Department of Medicinal Chemistry, Delbert M. Shankel Structural Biology Center, University of Kansas, 2034 Becker Drive, West Campus, Lawrence, KS 66047, USA.
| | - Jeffrey Aubé
- Department of Medicinal Chemistry, Delbert M. Shankel Structural Biology Center, University of Kansas, 2034 Becker Drive, West Campus, Lawrence, KS 66047, USA.
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37
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An XD, Yu S. Direct Synthesis of Nitriles from Aldehydes Using an O-Benzoyl Hydroxylamine (BHA) as the Nitrogen Source. Org Lett 2015; 17:5064-7. [DOI: 10.1021/acs.orglett.5b02547] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xiao-De An
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Shouyun Yu
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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38
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Ahuja BB, Sudalai A. Cu-catalyzed debrominative cyanation of gem-dibromoolefins: a facile access to α,β-unsaturated nitriles. Org Biomol Chem 2015; 13:5918-23. [PMID: 25921296 DOI: 10.1039/c5ob00394f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient catalytic route for the synthesis of α,β-unsaturated nitriles from easily accessible gem-dibromoolefins has been developed. The method utilized inexpensive reagents such as Cu2O as a catalyst, L-proline as a ligand and NaCN as a cyanide source to afford α,β-unsaturated nitriles in high yields (62-86%). A deuterium exchange study has shown that one of the bromide atoms of gem-dibromoolefins exchanges with cyanide while the other with a deuterium atom.
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Affiliation(s)
- Brij Bhushan Ahuja
- National Chemical Laboratory, Chemical Engineering & Process Development Division, Pune 411008, Maharastra, India.
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39
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Xu B, Jiang Q, Zhao A, Jia J, Liu Q, Luo W, Guo C. Copper-catalyzed aerobic conversion of the CO bond of ketones to a CN bond using ammonium salts as the nitrogen source. Chem Commun (Camb) 2015; 51:11264-7. [PMID: 26081463 DOI: 10.1039/c5cc02578h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The copper-catalyzed conversion of the CO bond of ketones to a CN bond is described using ammonium salts as the nitrogen source in the presence of molecular oxygen.
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Affiliation(s)
- Bin Xu
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Qing Jiang
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - An Zhao
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Jing Jia
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Qiang Liu
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Weiping Luo
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Cancheng Guo
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
- P. R. China
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40
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Wu B, Gao X, Chen MW, Zhou YG. A Concise Synthesis of 2-(2-Hydroxyphenyl)acetonitrilesviatheo-Quinone Methides Generated from 2-(1-Tosylalkyl)phenols. CHINESE J CHEM 2014. [DOI: 10.1002/cjoc.201400463] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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41
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Tseng KNT, Rizzi AM, Szymczak NK. Oxidant-Free Conversion of Primary Amines to Nitriles. J Am Chem Soc 2013; 135:16352-5. [DOI: 10.1021/ja409223a] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Kuei-Nin T. Tseng
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Andrew M. Rizzi
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Nathaniel K. Szymczak
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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