1
|
Pijper B, Martín R, Huertas-Alonso AJ, Linares ML, López E, Llaveria J, Díaz-Ortiz Á, Dixon DJ, de la Hoz A, Alcázar J. Fully Automated Flow Protocol for C(sp 3)-C(sp 3) Bond Formation from Tertiary Amides and Alkyl Halides. Org Lett 2024; 26:2724-2728. [PMID: 37219892 PMCID: PMC11020161 DOI: 10.1021/acs.orglett.3c01390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Indexed: 05/24/2023]
Abstract
Herein, we present a novel C(sp3)-C(sp3) bond-forming protocol via the reductive coupling of abundant tertiary amides with organozinc reagents prepared in situ from their corresponding alkyl halides. Using a multistep fully automated flow protocol, this reaction could be used for both library synthesis and target molecule synthesis on the gram-scale starting from bench-stable reagents. Additionally, excellent chemoselectivity and functional group tolerance make it ideal for late-stage diversification of druglike molecules.
Collapse
Affiliation(s)
- Brenda Pijper
- Global
Discovery Chemistry, Janssen Research and Development, Janssen-Cilag, S. A., Jarama 75 A, 45007 Toledo, Spain
| | - Raúl Martín
- Facultad
de Ciencias Químicas, Universidad
de Castilla-La Mancha, Av. Camilo José Cela 10, 13071 Ciudad Real, Spain
| | - Alberto J. Huertas-Alonso
- Facultad
de Ciencias Químicas, Universidad
de Castilla-La Mancha, Av. Camilo José Cela 10, 13071 Ciudad Real, Spain
| | - Maria Lourdes Linares
- Global
Discovery Chemistry, Janssen Research and Development, Janssen-Cilag, S. A., Jarama 75 A, 45007 Toledo, Spain
| | - Enol López
- Facultad
de Ciencias Químicas, Universidad
de Castilla-La Mancha, Av. Camilo José Cela 10, 13071 Ciudad Real, Spain
| | - Josep Llaveria
- Global
Discovery Chemistry, Janssen Research and Development, Janssen-Cilag, S. A., Jarama 75 A, 45007 Toledo, Spain
| | - Ángel Díaz-Ortiz
- Facultad
de Ciencias Químicas, Universidad
de Castilla-La Mancha, Av. Camilo José Cela 10, 13071 Ciudad Real, Spain
| | - Darren J. Dixon
- Chemistry
Research Laboratory, Department of Chemistry, University of Oxford. Oxford OX1 3TA, United
Kingdom
| | - Antonio de la Hoz
- Facultad
de Ciencias Químicas, Universidad
de Castilla-La Mancha, Av. Camilo José Cela 10, 13071 Ciudad Real, Spain
| | - Jesús Alcázar
- Global
Discovery Chemistry, Janssen Research and Development, Janssen-Cilag, S. A., Jarama 75 A, 45007 Toledo, Spain
| |
Collapse
|
2
|
Yang R, Zhou Z, Jiang H, Kam TS, Chen K, Ma Z. Asymmetric Synthesis of Arboduridine. Angew Chem Int Ed Engl 2024; 63:e202316016. [PMID: 38038685 DOI: 10.1002/anie.202316016] [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: 10/23/2023] [Revised: 11/30/2023] [Accepted: 11/30/2023] [Indexed: 12/02/2023]
Abstract
The first asymmetric total synthesis of the monoterpenoid indole alkaloid arboduridine has been accomplished. The tricyclic A/B/D ring system was constructed by an enantioselective Michael reaction followed by intramolecular nucleophilic addition. Intramolecular α-amination of a ketone forged the piperidine ring, while a Horner-Wadsworth-Emmons (HWE) reaction was used to form the pyrrolidine ring. A reduction cyclization cascade led to formation of the tetrahydrofuran ring.
Collapse
Affiliation(s)
- Rui Yang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Zeyu Zhou
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Zhiqiang Ma
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, Guangdong, 518055, P.R. China
| |
Collapse
|
3
|
Kehner R, Zhang G, Bayeh-Romero L. Mild Divergent Semireductive Transformations of Secondary and Tertiary Amides via Zirconocene Hydride Catalysis. J Am Chem Soc 2023; 145:4921-4927. [PMID: 36809854 PMCID: PMC10000628 DOI: 10.1021/jacs.2c11786] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Indexed: 02/23/2023]
Abstract
The mild catalytic partial reduction of amides to imines has proven to be a challenging synthetic transformation, with many transition metals directly reducing these substrates to amines. Herein, we report a mild, catalytic method for the semireduction of both secondary and tertiary amides via zirconocene hydride catalysis. Utilizing just 5 mol % of Cp2ZrCl2, the reductive deoxygenation of secondary amides is demonstrated to furnish a diverse array of imines in up to 94% yield with excellent chemoselectivity and without the need for glovebox handling. Moreover, a novel reductive transamination of tertiary amides is also achievable when the catalytic protocol is carried out in the presence of a primary amine at room temperature, providing access to an expanded assortment of imines in up to 98% yield. Through slight procedural tuning, the single-flask conversion of amides to imines, aldehydes, amines or enamines is feasible, including multicomponent syntheses.
Collapse
Affiliation(s)
- Rebecca
A. Kehner
- Department of Chemistry and
Biochemistry, Baylor University, Waco, Texas 76706, United States
| | - Ge Zhang
- Department of Chemistry and
Biochemistry, Baylor University, Waco, Texas 76706, United States
| | - Liela Bayeh-Romero
- Department of Chemistry and
Biochemistry, Baylor University, Waco, Texas 76706, United States
| |
Collapse
|
4
|
Han F, Lu GS, Wu DP, Huang PQ. Iridium and B(C6F5)3 co-catalyzed chemoselective deoxygenative reduction of tertiary amides: application to the efficient synthesis and late-stage modification of pharmaceuticals. Sci China Chem 2023. [DOI: 10.1007/s11426-022-1501-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
|
5
|
Jiao J, Yang W, Wang X. α-Aminocarbene-Mediated Si-H Insertion: Deoxygenative Silylation of Aromatic Amides with Silanes. J Org Chem 2023; 88:594-601. [PMID: 36521058 DOI: 10.1021/acs.joc.2c02649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
While metal carbene-mediated Si-H insertion reactions have become a powerful strategy to build new C-Si bonds, the utilization of α-aminocarbene intermediates generated from readily available precursors in the Si-H insertion reaction remains a longstanding challenge. Herein, we develop a practical and general strategy to synthesize α-aminosilanes through a deoxygenative cross-coupling of amides and silanes mediated by Sm/SmI2. Given the simplicity and versatility, this methodology represents a fascinating example for the effective utilization of inert amides as α-aminocarbene precursors in organic synthesis.
Collapse
Affiliation(s)
- Jiwen Jiao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Wenhan Yang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
| |
Collapse
|
6
|
Donnelly LJ, Berthet J, Cantat T. Selective Reduction of Secondary Amides to Imines Catalysed by Schwartz's Reagent**. Angew Chem Int Ed Engl 2022; 61:e202206170. [DOI: 10.1002/anie.202206170] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Liam J. Donnelly
- Université Paris-Saclay CEA CNRS NIMBE 91191 Gif-sur-Yvette France
| | | | - Thibault Cantat
- Université Paris-Saclay CEA CNRS NIMBE 91191 Gif-sur-Yvette France
| |
Collapse
|
7
|
Wu DP, Ou W, Huang PQ. Ir-Catalyzed Chemoselective Reductive Condensation Reactions of Tertiary Amides with Active Methylene Compounds. Org Lett 2022; 24:5366-5371. [PMID: 35849542 DOI: 10.1021/acs.orglett.2c02045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The catalytic reductive condensation reactions of tertiary amides with active methylene compounds leading to multifunctionalized non-N-containing products is described. The reactions proceed through sequential iridium-catalyzed hydrosilylation of the amides followed by acid-mediated condensation with the active methylene compounds. This scalable method is broad in scope and shows remarkable chemoselectivity for the amide group in the presence of several sensitive or even more reactive functionalities such as ester, cyano, nitro, silyl dienol ether, and ketone.
Collapse
Affiliation(s)
- Dong-Ping Wu
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Wei Ou
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Pei-Qiang Huang
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| |
Collapse
|
8
|
Zhao F, Jiang F, Wang X. Deoxygenative alkylation of tertiary amides using alkyl iodides under visible light. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1331-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
9
|
Donnelly LJ, Berthet J, Cantat T. Selective Reduction of Secondary Amides to Imines Catalysed by Schwartz's Reagent**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206170] [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)
- Liam J. Donnelly
- Université Paris-Saclay CEA CNRS NIMBE 91191 Gif-sur-Yvette France
| | | | - Thibault Cantat
- Université Paris-Saclay CEA CNRS NIMBE 91191 Gif-sur-Yvette France
| |
Collapse
|
10
|
Agrawal T, Perez-Morales KD, Cort JA, Sieber JD. Asymmetric Synthesis of Propargylic α-Stereogenic Tertiary Amines by Reductive Alkynylation of Tertiary Amides Using Ir/Cu Tandem Catalysis. J Org Chem 2022; 87:6387-6392. [PMID: 35435681 DOI: 10.1021/acs.joc.2c00131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of an asymmetric protocol for the reductive alkynylation of amides to access important α-stereogenic tertiary propargylic amines is reported using a tandem Ir-catalyzed hydrosilylation/enantioselective Cu-catalyzed alkynylation. The reaction utilizes a Cu/PyBox catalyst system in the alkynylation step to achieve asymmetry and affords excellent yields with moderate to good levels of enantiocontrol while employing low Ir-catalyst loadings (0.5 mol %).
Collapse
Affiliation(s)
- Toolika Agrawal
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284, United States
| | - Kimberly D Perez-Morales
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284, United States
| | - Jermaine A Cort
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284, United States
| | - Joshua D Sieber
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284, United States
| |
Collapse
|
11
|
Liu L, Liu Y, Shen X, Zhang X, Deng S, Chen Y. KO tBu-Mediated Reductive Cyanation of Tertiary Amides for Synthesis of α-Aminonitriles. J Org Chem 2022; 87:6321-6329. [PMID: 35394785 DOI: 10.1021/acs.joc.1c02835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A simple, mild, catalyst-free, and efficacious KOtBu-mediated reductive cyanation reaction of tertiary amides under hydrosilylation conditions has been described. A series of α-aminonitriles is obtained in moderate to high yield with good functional group tolerance. The reaction works well with a readily available amide substrate, a cheap and versatile base KOtBu, and a commercially available hydrosilane (EtO)3SiH and is convenient for workup and purification.
Collapse
Affiliation(s)
- Liwen Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Yu Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Xue Shen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Xiao Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Shengqi Deng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| | - Yang Chen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, China
| |
Collapse
|
12
|
Chemoselective Hydrosilylation of Carboxylic Acids using a Phosphine-free Ruthenium Complex and Phenylsilane. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122288] [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]
|
13
|
Wang XG, Ou W, Liu MH, Liu ZJ, Huang PQ. Tandem Catalysis Enabled Highly Chemoselective Deoxygenative Alkynylation and Alkylation of Tertiary Amides: A Versatile Entry to Functionalized α-Substituted Amines. Org Chem Front 2022. [DOI: 10.1039/d2qo00335j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report here the highly chemoseive catalytic reductive alkynylation and reductive alkylation of tertiary amides to give propargylamines and α-branched amines, respectively. The method features a tandem iridium (Vaska’s complex)-catalyzed...
Collapse
|
14
|
Li Z, Zhao F, Ou W, Huang P, Wang X. Asymmetric Deoxygenative Alkynylation of Tertiary Amides Enabled by Iridium/Copper Bimetallic Relay Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zhaokun Li
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Feng Zhao
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Wei Ou
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Pei‐Qiang Huang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- School of Chemistry and Materials Science Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences 1 Sub-lane Xiangshan Hangzhou 310024 China
| |
Collapse
|
15
|
Li Z, Zhao F, Ou W, Huang PQ, Wang X. Asymmetric Deoxygenative Alkynylation of Tertiary Amides Enabled by Iridium/Copper Bimetallic Relay Catalysis. Angew Chem Int Ed Engl 2021; 60:26604-26609. [PMID: 34596947 DOI: 10.1002/anie.202111029] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Indexed: 12/15/2022]
Abstract
A variety of inert tertiary amides have been successfully transformed into synthetically important chiral propargylamines in high yields with good to excellent enantioselectivities via a relayed sequence of Ir catalyzed partial reduction and Cu/GARPHOS catalyzed asymmetric alkynylation with terminal alkynes. The reaction was readily extended to some drug molecules and the transformations of representative products have been demonstrated, thus attesting the practical utilities and the robust nature of the protocol.
Collapse
Affiliation(s)
- Zhaokun Li
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Feng Zhao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Wei Ou
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Pei-Qiang Huang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, China
| |
Collapse
|
16
|
Matheau‐Raven D, Dixon DJ. General α-Amino 1,3,4-Oxadiazole Synthesis via Late-Stage Reductive Functionalization of Tertiary Amides and Lactams*. Angew Chem Int Ed Engl 2021; 60:19725-19729. [PMID: 34191400 PMCID: PMC8457168 DOI: 10.1002/anie.202107536] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Indexed: 01/25/2023]
Abstract
An iridium-catalyzed reductive three-component coupling reaction for the synthesis of medicinally relevant α-amino 1,3,4-oxadiazoles from abundant tertiary amides or lactams, carboxylic acids, and (N-isocyanimino) triphenylphosphorane, is described. Proceeding under mild conditions using (<1 mol %) Vaska's complex (IrCl(CO)(PPh3 )2 ) and tetramethyldisiloxane to access the key reactive iminium ion intermediates, a broad range of α-amino 1,3,4-oxadiazole architectures were accessed from carboxylic acid feedstock coupling partners. Extension to α-amino heterodiazole synthesis was readily achieved by exchanging the carboxylic acid coupling partner for C-, S-, or N-centered Brønsted acids, and provided rapid and modular access to these desirable, yet difficult-to-access, heterocycles. The high chemoselectivity of the catalytic reductive activation step allowed late-stage functionalization of 10 drug molecules, including the synthesis of heterodiazole-fused drug-drug conjugates.
Collapse
Affiliation(s)
- Daniel Matheau‐Raven
- Chemistry Research LaboratoryDepartment of ChemistryUniversity of Oxford12 Mansfield RoadOxfordUK
| | - Darren J. Dixon
- Chemistry Research LaboratoryDepartment of ChemistryUniversity of Oxford12 Mansfield RoadOxfordUK
| |
Collapse
|
17
|
Matheau‐Raven D, Dixon DJ. General α‐Amino 1,3,4‐Oxadiazole Synthesis via Late‐Stage Reductive Functionalization of Tertiary Amides and Lactams**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107536] [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)
- Daniel Matheau‐Raven
- Chemistry Research Laboratory Department of Chemistry University of Oxford 12 Mansfield Road Oxford UK
| | - Darren J. Dixon
- Chemistry Research Laboratory Department of Chemistry University of Oxford 12 Mansfield Road Oxford UK
| |
Collapse
|
18
|
Jiao J, Wang X. Merging Electron Transfer with 1,2-Metalate Rearrangement: Deoxygenative Arylation of Aromatic Amides with Arylboronic Esters. Angew Chem Int Ed Engl 2021; 60:17088-17093. [PMID: 33988285 DOI: 10.1002/anie.202104359] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/28/2021] [Indexed: 12/15/2022]
Abstract
Amides are essentially inert carboxyl derivatives in many types of chemical transformations. In particular, deoxygenative C-C bond formation of amides to synthetically important amines is a long-standing challenge for synthetic chemists due to the inertness of the resonance-stabilized amide C=O bond. Herein, it is disclosed that by merging electron-transfer-induced activation with 1,2-metalate rearrangement, a wide range of aromatic amides react smoothly with arylboron reagents, affording a series of biologically relevant diarylmethylamines as deoxygenative C-C bond cross-coupling products. With its simplicity and versatility, this reaction shows great promise in the synthesis of amines from amides, which may open up new avenues in retrosynthetic planning and find widespread use in academia and industry.
Collapse
Affiliation(s)
- Jiwen Jiao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, China
| |
Collapse
|
19
|
Antico E, Schlichter P, Werlé C, Leitner W. Reduction of Carboxylic Acids to Alcohols via Manganese(I) Catalyzed Hydrosilylation. JACS AU 2021; 1:742-749. [PMID: 34467330 PMCID: PMC8395667 DOI: 10.1021/jacsau.1c00140] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The reduction of carboxylic acids to the respective alcohols, in mild conditions, was achieved using [MnBr(CO)5] as the catalyst and bench stable PhSiH3 as the reducing agent. It was shown that the reaction with the earth-abundant metal catalyst could be performed either with a catalyst loading as low as 0.5 mol %, rare with the use of [MnBr(CO)5], or on a gram scale employing only 1.5 equiv of PhSiH3, the lowest amount of silane reported to date for this transformation. Kinetic data and control experiments have provided initial insight into the mechanism of the catalytic process, suggesting that it proceeds via the formation of silyl ester intermediates and ligand dissociation to generate a coordinatively unsaturated Mn(I) complex as the active species.
Collapse
Affiliation(s)
- Emanuele Antico
- Max
Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Institut
für Technische und Makromolekulare Chemie (ITMC), RWTH Aachen University, Worringer Weg 2, 52074 Aachen, Germany
| | - Peter Schlichter
- Max
Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Institut
für Technische und Makromolekulare Chemie (ITMC), RWTH Aachen University, Worringer Weg 2, 52074 Aachen, Germany
| | - Christophe Werlé
- Max
Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Ruhr
University Bochum, Universitätsstr.
150, 44801 Bochum, Germany
| | - Walter Leitner
- Max
Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Institut
für Technische und Makromolekulare Chemie (ITMC), RWTH Aachen University, Worringer Weg 2, 52074 Aachen, Germany
| |
Collapse
|
20
|
Jiao J, Wang X. Merging Electron Transfer with 1,2‐Metalate Rearrangement: Deoxygenative Arylation of Aromatic Amides with Arylboronic Esters. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104359] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jiwen Jiao
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
- School of Chemistry and Materials Science Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences 1 Sub-lane Xiangshan Hangzhou 310024 China
| |
Collapse
|
21
|
He Y, Wang X. Synthesis of Cyclic Amidines by Iridium-Catalyzed Deoxygenative Reduction of Lactams and Tandem Reaction with Sulfonyl Azides. Org Lett 2020; 23:225-230. [DOI: 10.1021/acs.orglett.0c03953] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Youliang He
- State Key Laboratory of Oganometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences (CAS), 345 Lingling Road, Shanghai 200032, P. R. China
| | - Xiaoming Wang
- State Key Laboratory of Oganometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences (CAS), 345 Lingling Road, Shanghai 200032, P. R. China
- School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, P. R. China
| |
Collapse
|
22
|
Affiliation(s)
- Karre Nagaraju
- 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
| | - Dongshun Ni
- 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
| |
Collapse
|
23
|
Nagaraju K, Ni D, Ma D. Total Synthesis of Kopsinitarine E. Angew Chem Int Ed Engl 2020; 59:22039-22042. [DOI: 10.1002/anie.202011093] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Karre Nagaraju
- 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
| | - Dongshun Ni
- 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
| |
Collapse
|
24
|
Matheau-Raven D, Gabriel P, Leitch JA, Almehmadi YA, Yamazaki K, Dixon DJ. Catalytic Reductive Functionalization of Tertiary Amides using Vaska’s Complex: Synthesis of Complex Tertiary Amine Building Blocks and Natural Products. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02377] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Daniel Matheau-Raven
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Pablo Gabriel
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Jamie A. Leitch
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Yaseen A. Almehmadi
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Ken Yamazaki
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Darren J. Dixon
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| |
Collapse
|
25
|
Liu Y, Xia Y, Cui S, Ji Y, Wu L. Palladium‐Catalyzed Cascade Hydrosilylation and Amino‐Methylation of Isatin Derivatives. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yue Liu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Yun‐Tao Xia
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Su‐Hang Cui
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| | - Yi‐Gang Ji
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
- Jiangsu Key Laboratory of Biofunctional Molecules, Department of Life Sciences and ChemistryJiangsu Second Normal University Nanjing 210013 People's Republic of China
| | - Lei Wu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of SciencesNanjing Agricultural University Nanjing 210095 People's Republic of China
| |
Collapse
|
26
|
Rawat S, Bhandari M, Porwal VK, Singh S. Hydrosilylation of Carbonyls Catalyzed by Hydridoborenium Borate Salts: Lewis Acid Activation and Anion Mediated Pathways. Inorg Chem 2020; 59:7195-7203. [PMID: 32364748 DOI: 10.1021/acs.inorgchem.0c00646] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The electronically unsaturated three-coordinated hydridoborenium cations [LBH]+[HB(C6F5)3]- (1) and [LBH]+[B(C6F5)4]- (2), supported by a bis(phosphinimino)amide ligand, were found to be excellent catalysts for hydrosilylation of a range of aliphatic and aromatic aldehydes and ketones under mild reaction conditions (L = [{(2,4,6-Me3C6H2N)P(Ph2)}2N]). The key steps of the catalytic cycle for hydrosilylation of PhCHO were monitored via in situ multinuclear NMR measurements for catalysts 1 and 2. The combined effect of carbonyl activation via the Lewis acidic hydridoborenium cation and the hydridic nature of the borate counteranion in 1 makes it a more efficient catalyst in comparison to that of carbonyl activation via the predominant Lewis acid activation pathway operating with catalyst 2. The catalytic cycle of 1 showed hydride transfer from the borate moiety [HB(C6F5)3]- to PhCHO in the first step, forming [PhCH2-O-B(C6F5)3]-, which subsequently underwent σ-bond metathesis with Et3SiH to form the product, PhCH2-O-SiEt3. Quantum chemical calculations also support the borate anion mediated mechanism with 1. In contrast, the reaction catalyzed by 2 proceeds predominantly via the Lewis acid activation of the carbonyl group involving [LB(H)←OC(H)Ph]+[B(C6F5)4]- as the transition state and [LBOCH2Ph]+[B(C6F5)4]- as the intermediate.
Collapse
Affiliation(s)
- Sandeep Rawat
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Mamta Bhandari
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Vishal Kumar Porwal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Sanjay Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| |
Collapse
|