1
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Beng TK, Kaur J, Anosike IS, Rentfro B, Newgard S. Revisiting the 1,3-azadiene-succinic anhydride annulation reaction for the stereocontrolled synthesis of allylic 2-oxopyrrolidines bearing up to four contiguous stereocenters. RSC Adv 2024; 14:16678-16684. [PMID: 38784414 PMCID: PMC11110166 DOI: 10.1039/d4ra03156c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Accepted: 05/15/2024] [Indexed: 05/25/2024] Open
Abstract
Polysubstituted 2-oxopyrrolidines bearing at least two contiguous stereocenters constitute the core of several pharmaceuticals, including clausenamide (antidementia). Here, we describe a flexible annulation strategy, which unites succinic anhydride and 1,3-azadienes to produce allylic 2-oxopyrrolidines bearing contiguous stereocenters. The approach is chemoselective, efficient, modular, scalable, and diastereoselective. The scalable nature of the reactions offers the opportunity for post-diversification, leading to incorporation of motifs with either known pharmaceutical value or that permit subsequent conversion to medicinally relevant entities.
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Affiliation(s)
- Timothy K Beng
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Jasleen Kaur
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Ifeyinwa S Anosike
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Benjamin Rentfro
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Shae Newgard
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
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2
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Do M, Anosike SI, Beng TK. Diastereospecific arylation and cascade deconstructive amidation/thioesterification of readily available lactam-fused bromolactones. RSC Adv 2023; 13:25691-25698. [PMID: 37649665 PMCID: PMC10463012 DOI: 10.1039/d3ra04690g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 08/18/2023] [Indexed: 09/01/2023] Open
Abstract
An intrinsic goal when designing synthetic methodology is to identify approaches whereby readily accessible precursors are converted into an array of products, which efficiently tap into new 3D-chemical space. In these studies, readily available bicyclic lactam-bromolactones have been interrogated in several fragment growth protocols by utilizing the halogen and lactone motifs as versatile linchpins for strategic construction of C-C, C-N, C-O, and C-S bonds. Diastereospecific C(sp3)-C(sp2) Kumada coupling of sterically imposing [5,5]-bicyclic lactam-bromolactones with several aryl Grignard reagents, under palladium catalysis, furnishes diarylmethane-tethered lactam-lactones in synthetically attractive yields, stereoinvertive fashion, and with a tolerance for many functional groups. When [5,6]-bicyclic lactam-bromolactones, which are prone to β-hydride elimination are employed, efficient arylation is observed only under Co(acac)3-catalyzed conditions. Importantly, these [5,6]-bicyclic lactam-bromolactones undergo retentive arylation, independent of the transition metal catalyst. A base-mediated cascade deconstructive amidation of the [5,6]-bicyclic lactam-bromolactones with primary aliphatic amines proceeds efficiently to afford epoxide-tethered lactam carboxamides, which bear four contiguous stereocenters. Furthermore, an unusual route to homoallylic thioesters has been uncovered through deconstructive contra-thermodynamic thioesterification of the lactam-fused bromolactone precursors.
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Affiliation(s)
- Minh Do
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Stella I Anosike
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
| | - Timothy K Beng
- Department of Chemistry, Central Washington University Ellensburg WA 98926 USA
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3
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Ghosh T, Biswas D, Bhakta S. Palladium-Catalyzed Synthesis of Fused Carbo- and Heterocycles: Recent Advances. Chem Asian J 2022; 17:e202200725. [PMID: 36065137 DOI: 10.1002/asia.202200725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 09/03/2022] [Indexed: 11/10/2022]
Abstract
The use of palladium catalysts in fused ring synthesis has been increasingly noteworthy in recent years in organic synthesis. It has a lot of potential compared to other transition metal catalysts, because of its one-of-a-kind feature that makes them more widely applicable in a variety of disciplines application. Palladium is important in a variety of Heck processes, including intramolecular, intermolecular, and reductive Heck reactions, which produce diverse carbocycles and heterocycles of biological importance. Under optimal reaction conditions, carbocyclization or heterocyclization occurs, resulting in the production of numerous structural building blocks of naturally occurring compounds. Beside intramolecular Heck-type reactions, cycloaddition, cycloalkylation, oxidative coupling, C-H functionalization, cross-coupling reactions, and carboamidation reactions have also been employed extensively to access fused carbo- and heterocycles of immense biological importance. This review article provides a well-summarized discussion (since 2001) on fused carbo- and heterocycle ring synthesis using palladium catalysts, overviewing their applications, and mechanistic insights.
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Affiliation(s)
- Tapas Ghosh
- Maulana Abul Kalam Azad University of Technology, Applied Sciences, Simhat, Haringhata, 741249, Haringhata, INDIA
| | - Diptam Biswas
- Maulana Abul Kalam Azad University of Technology, Applied Chemistry, INDIA
| | - Sayantika Bhakta
- Maulana Abul Kalam Azad University of Technology, Applied Chemistry, INDIA
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4
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Chen LY, Tang RS, Wu YC, Lai CH, Chuang TH. Regiodivergent Synthesis of Methylene and Methyl Ring-Fused Isoquinolinones: Base-Promoted Isomerization of N-Allyl Amides. J Org Chem 2022; 87:5925-5937. [PMID: 35404617 DOI: 10.1021/acs.joc.2c00204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Methylene and methyl tricyclic isoquinolinones were selectively prepared using a palladium(II)-catalyzed aerobic aza-Wacker reaction, followed by a base- and temperature-controlled Heck reaction catalyzed by palladium(0). Exo- to endo-double-bond migration in isoquinolinones was achieved with 93-99% yields by treatment of the Heck products with Cs2CO3 in dimethyl sulfoxide (DMSO) at 150 °C. A probable mechanism for Cs2CO3-promoted olefin isomerization was proposed and examined using D-isotope labeling experiments. Finally, yuanamide, a 13-methyl-8-oxoprotoberberine alkaloid, was synthesized using the palladium-catalyzed aza-Wacker/Heck/migration sequence.
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Affiliation(s)
- Li-Yuan Chen
- School of Pharmacy, China Medical University, Taichung 406040, Taiwan
| | - Rong-Shiow Tang
- School of Pharmacy, China Medical University, Taichung 406040, Taiwan
| | - Yang-Chang Wu
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404394, Taiwan
| | - Chin-Hung Lai
- Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Ta-Hsien Chuang
- School of Pharmacy, China Medical University, Taichung 406040, Taiwan
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5
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Synthesis of γ-lactams via trifluoromethylative aminocarbonylation of unactivated olefins. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151479] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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(S)-Ethyl 2-(tert-butoxycarbonylamino)-3-(2-iodo-4,5-methylenedioxyphenyl)propanoate. MOLBANK 2019. [DOI: 10.3390/m1049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A multistep gram-scale synthesis of (S)-ethyl 2-(tert-butoxycarbonylamino)-3-(2-iodo-4,5-methylenedioxyphenyl)propanoate (2) has been developed. The title compound was prepared starting from commercially available l-DOPA which was O- and N-protected before undergoing iodination by CF3CO2Ag/I2. The structure of the target compound was confirmed using IR, 1H-NMR, 13C-NMR, 2D (COSY, HSQC) NMR spectroscopy, as well as ESI-MS and HRMS.
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7
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Chen D, Ji M, Zhu C. Intramolecular nitration–aminocarbonylation of unactivated olefins: metal-free synthesis of γ-lactams. Chem Commun (Camb) 2019; 55:7796-7799. [DOI: 10.1039/c9cc03736e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel, metal-free synthesis of valuable γ-lactams through the radical-mediated nitration–aminocarbonylation of unactivated olefins is reported.
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Affiliation(s)
- Dong Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
| | - Meishan Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
| | - Chen Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
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8
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Yao T, Guo Z, Liang X, Qi L. Regio- and Stereoselective Electrophilic Cyclization Approach for the Protecting-Group-Free Synthesis of Alkaloids Lennoxamine, Chilenine, Fumaridine, 8-Oxypseudoplamatine, and 2-O-(Methyloxy)fagaronine. J Org Chem 2018; 83:13370-13380. [DOI: 10.1021/acs.joc.8b02154] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tuanli Yao
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
- Shaaxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Zhen Guo
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Xiujuan Liang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Lihan Qi
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
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9
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Padmaja RD, Devi C. V, Mukku N, Chanda K, Maiti B. Rapid Construction of an Imidazo[4,5- b]pyridine Skeleton from 2-Chloro-3-nitropyridine via Tandem Reaction in H 2O-IPA Medium. ACS OMEGA 2018; 3:4583-4590. [PMID: 31458681 PMCID: PMC6641603 DOI: 10.1021/acsomega.8b00426] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 04/13/2018] [Indexed: 05/05/2023]
Abstract
A highly efficient, clean, and simple procedure for the synthesis of a privilege imidazo[4,5-b]pyridine scaffold from 2-chloro-3-nitropyridine in combination with environmentally benign H2O-IPA as a green solvent is presented. The scope of the novel method has been demonstrated through the tandem sequence of SNAr reaction with substituted primary amines followed by the in situ nitro group reduction and subsequent heteroannulation with substituted aromatic aldehydes to obtain functionalized imidazo[4,5-b]pyridines with only one chromatographic purification step. The synthesis pathway appears to be green, simple, and superior compared with other already reported procedures, with the high abundance of reagents and great ability in expanding the structural diversity.
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10
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Wang BQ, Zhang CH, Tian XX, Lin J, Yan SJ. Cascade Reaction of Isatins with 1,1-Enediamines: Synthesis of Multisubstituted Quinoline-4-carboxamides. Org Lett 2018; 20:660-663. [DOI: 10.1021/acs.orglett.7b03803] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bao-Qu Wang
- Key Laboratory of Medicinal Chemistry
for Natural Resources (Yunnan University), Ministry of Education,
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Cong-Hai Zhang
- Key Laboratory of Medicinal Chemistry
for Natural Resources (Yunnan University), Ministry of Education,
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Xiao-Xue Tian
- Key Laboratory of Medicinal Chemistry
for Natural Resources (Yunnan University), Ministry of Education,
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry
for Natural Resources (Yunnan University), Ministry of Education,
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Sheng-Jiao Yan
- Key Laboratory of Medicinal Chemistry
for Natural Resources (Yunnan University), Ministry of Education,
School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
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11
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Raji Reddy C, Mallesh K. Rh(III)-Catalyzed Cascade Annulations To Access Isoindolo[2,1-b]isoquinolin-5(7H)-ones via C–H Activation: Synthesis of Rosettacin. Org Lett 2017; 20:150-153. [DOI: 10.1021/acs.orglett.7b03509] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Chada Raji Reddy
- Division
of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
| | - Kathe Mallesh
- Division
of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110025, India
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12
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Tsukamoto H, Ikeda T, Doi T. Palladium(II)-Catalyzed Annulation of Alkynes with 2-(Cyanomethyl)phenylboronates Leading to 3,4-Disubstituted 2-Naphthalenamines. J Org Chem 2015; 81:1733-45. [DOI: 10.1021/acs.joc.5b02378] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hirokazu Tsukamoto
- Graduate School of Pharmaceutical
Sciences, Tohoku University, Aramaki-aza aoba 6-3, Aoba-ku, Sendai 980-8578, Japan
| | - Taishi Ikeda
- Graduate School of Pharmaceutical
Sciences, Tohoku University, Aramaki-aza aoba 6-3, Aoba-ku, Sendai 980-8578, Japan
| | - Takayuki Doi
- Graduate School of Pharmaceutical
Sciences, Tohoku University, Aramaki-aza aoba 6-3, Aoba-ku, Sendai 980-8578, Japan
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13
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Chary RG, Dhananjaya G, Prasad KV, Vaishaly S, Ganesh YSS, Dulla B, Kumar KS, Pal M. A simple access to N-(un)substituted isoquinolin-1(2H)-ones: unusual formation of regioisomeric isoquinolin-1(4H)-ones. Chem Commun (Camb) 2014; 50:6797-800. [PMID: 24837646 DOI: 10.1039/c4cc01580k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A ligand/additive/Pd-free Cu-mediated coupling/cyclization strategy afforded the first practical, one-pot and general approach towards synthesis of N-(un)substituted isoquinolin-1(2H)-ones. Both the catalyst and the solvent used are recyclable. The use of the Cu reagent in excess led to the unusual formation of regioisomeric and uncommon isoquinolin-1(4H)-ones.
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Affiliation(s)
- R Gangadhara Chary
- Custom Pharmaceutical Services, Dr Reddy's Laboratories Limited, Bollaram Road Miyapur, Hyderabad 500 049, India
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14
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Ye LW, Shu C, Gagosz F. Recent progress towards transition metal-catalyzed synthesis of γ-lactams. Org Biomol Chem 2014; 12:1833-45. [DOI: 10.1039/c3ob42181c] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The scope of transition metal-catalyzed synthesis of functionalized γ-lactams has broadened tremendously in the last decade (see the picture). These metal-catalyzed processes are reviewed by highlighting their specificity and applicability, and the mechanistic rationale is presented where possible.
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Affiliation(s)
- Long-Wu Ye
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005, P. R. China
| | - Chao Shu
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005, P. R. China
| | - Fabien Gagosz
- Laboratoire de Synthèse Organique (DCSO)
- UMR 7652 CNRS/Ecole Polytechnique
- Ecole Polytechnique
- 91128 Palaiseau cedex, France
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15
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Ran L, Ren ZH, Wang YY, Guan ZH. Palladium-Catalyzed Aminocarbonylation of Aryl Iodides with Amides andN-alkyl Anilines. Chem Asian J 2013; 9:577-83. [DOI: 10.1002/asia.201301245] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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16
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Shu C, Liu MQ, Wang SS, Li L, Ye LW. Gold-Catalyzed Oxidative Cyclization of Chiral Homopropargyl Amides: Synthesis of Enantioenriched γ-Lactams. J Org Chem 2013; 78:3292-9. [DOI: 10.1021/jo400127x] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Chao Shu
- Department of Chemistry and Fujian
Provincial Key Laboratory
of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, PR China
| | - Meng-Qi Liu
- Department of Chemistry and Fujian
Provincial Key Laboratory
of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, PR China
| | - Shan-Shan Wang
- Department of Chemistry and Fujian
Provincial Key Laboratory
of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, PR China
| | - Long Li
- Department of Chemistry and Fujian
Provincial Key Laboratory
of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, PR China
| | - Long-Wu Ye
- Department of Chemistry and Fujian
Provincial Key Laboratory
of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, PR China
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17
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18
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Wu XF, Neumann H, Beller M. Synthesis of Heterocycles via Palladium-Catalyzed Carbonylations. Chem Rev 2012; 113:1-35. [DOI: 10.1021/cr300100s] [Citation(s) in RCA: 961] [Impact Index Per Article: 80.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xiao-Feng Wu
- Department of Chemistry, Zhejiang
Sci-Tech University, Xiasha Campus, Hangzhou, Zhejiang Province, P.
R. China 310018
- Leibniz-Institut
für
Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse
29a, 18059 Rostock, Germany
| | - Helfried Neumann
- Leibniz-Institut
für
Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse
29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz-Institut
für
Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse
29a, 18059 Rostock, Germany
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19
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Okuro K, Alper H. Palladium-catalyzed synthesis of 4-alkoxycarbonyl-3,4-dihydroisoquinolin-1(2H)-ones. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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20
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Okuro K, Alper H. Palladium-catalyzed intermolecular cyclocarbonylation of 2-iodoanilines with N-toluenesulfonyl aldimines. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.03.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Okuro K, Alper H. Palladium-Catalyzed Intermolecular Cyclocarbonylation of 2-Iodoanilines with the Michael Acceptor, Diethyl Ethoxycarbonylbutendienoate. J Org Chem 2012; 77:4420-4. [DOI: 10.1021/jo300173g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Kazumi Okuro
- Centre for Catalysis Research and Innovation, Department
of Chemistry, University of Ottawa, 10
Marie Curie, Ottawa, K1N 6N5, Canada
| | - Howard Alper
- Centre for Catalysis Research and Innovation, Department
of Chemistry, University of Ottawa, 10
Marie Curie, Ottawa, K1N 6N5, Canada
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22
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Nakaya R, Yorimitsu H, Oshima K. Bis(cyclopentadienyldicarbonyliron) as a Convenient Carbon Monoxide Source in Palladium-catalyzed Carbonylative Coupling of Aryl Iodides with Amines, Alcohols, and Thiols. CHEM LETT 2011. [DOI: 10.1246/cl.2011.904] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Yu F, Yan S, Hu L, Wang Y, Lin J. Cascade Reaction of Isatins with Heterocyclic Ketene Aminals: Synthesis of Imidazopyrroloquinoline Derivatives. Org Lett 2011; 13:4782-5. [PMID: 21848302 DOI: 10.1021/ol201783d] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Fuchao Yu
- Key Laboratory of Medicinal Chemistry for Natural Resources (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Shengjiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resources (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Ling Hu
- Key Laboratory of Medicinal Chemistry for Natural Resources (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Yongchao Wang
- Key Laboratory of Medicinal Chemistry for Natural Resources (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resources (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
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24
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Zeng F, Alper H. Palladium-Catalyzed Domino C–S Coupling/Carbonylation Reactions: An Efficient Synthesis of 2-Carbonylbenzo[b]thiophene Derivatives. Org Lett 2011; 13:2868-71. [DOI: 10.1021/ol200880m] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Fanlong Zeng
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada, K1N 6N5
| | - Howard Alper
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada, K1N 6N5
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25
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Zeng F, Alper H. Palladium-Catalyzed Domino Ring-Opening/Carboxamidation Reactions of N-Tosyl Aziridines and 2-Iodothiophenols: A Facile and Efficient Approach to 1,4-Benzothiazepin-5-ones. Org Lett 2010; 12:5567-9. [DOI: 10.1021/ol102394h] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Fanlong Zeng
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada, K1N 6N5
| | - Howard Alper
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada, K1N 6N5
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26
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Zeng F, Alper H. One-Step Synthesis of Quinazolino[3,2-a]quinazolinones via Palladium-Catalyzed Domino Addition/Carboxamidation Reactions. Org Lett 2010; 12:3642-4. [DOI: 10.1021/ol101428v] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Fanlong Zeng
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada, K1N 6N5
| | - Howard Alper
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada, K1N 6N5
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27
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Zeng F, Alper H. Tandem Palladium-Catalyzed Addition/Cyclocarbonylation: An Efficient Synthesis of 2-Heteroquinazolin-4(3H)-ones. Org Lett 2010; 12:1188-91. [DOI: 10.1021/ol902924x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fanlong Zeng
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada K1N 6N5
| | - Howard Alper
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada K1N 6N5
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28
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Chouhan G, Alper H. Domino Ring-Opening/Carboxamidation Reactions of N-Tosyl Aziridines and 2-Halophenols/Pyridinol: Efficient Synthesis of 1,4-Benzo- and Pyrido-oxazepinones. Org Lett 2009; 12:192-5. [DOI: 10.1021/ol902598d] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gagan Chouhan
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada, K1N 6N5
| | - Howard Alper
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada, K1N 6N5
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29
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Arthuis M, Pontikis R, Florent JC. Palladium-Catalyzed Domino C,N-Coupling/Carbonylation/Suzuki Coupling Reaction: An Efficient Synthesis of 2-Aroyl-/Heteroaroylindoles. Org Lett 2009; 11:4608-11. [DOI: 10.1021/ol901875z] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Martin Arthuis
- Institut Curie, Centre de Recherche, 26 rue d’Ulm, Paris F-75248 cedex 05, France, and CNRS, UMR 176, 26 rue d’Ulm, Paris F-75248 cedex 05, France
| | - Renée Pontikis
- Institut Curie, Centre de Recherche, 26 rue d’Ulm, Paris F-75248 cedex 05, France, and CNRS, UMR 176, 26 rue d’Ulm, Paris F-75248 cedex 05, France
| | - Jean-Claude Florent
- Institut Curie, Centre de Recherche, 26 rue d’Ulm, Paris F-75248 cedex 05, France, and CNRS, UMR 176, 26 rue d’Ulm, Paris F-75248 cedex 05, France
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30
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Zheng Z, Alper H. Palladium-Catalyzed Cyclocarbonylation-Decarboxylation of Diethyl(2-iodoaryl)malonates with Vinyl Ketones Affording Functionalized Enolic 2-Acyl-3,4-dihydronaphthalenones. Org Lett 2009; 11:3278-81. [DOI: 10.1021/ol900859n] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhaoyan Zheng
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Howard Alper
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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31
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Thansandote P, Gouliaras C, Turcotte-Savard MO, Lautens M. A Rapid Approach to the Synthesis of Highly Functionalized Tetrahydroisoquinolines. J Org Chem 2009; 74:1791-3. [DOI: 10.1021/jo8025725] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Praew Thansandote
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Canada M5S3H6
| | - Christina Gouliaras
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Canada M5S3H6
| | | | - Mark Lautens
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Canada M5S3H6
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32
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Tadd AC, Matsuno A, Fielding MR, Willis MC. Cascade Palladium-Catalyzed Alkenyl Aminocarbonylation/ Intramolecular Aryl Amidation: An Annulative Synthesis of 2-Quinolones. Org Lett 2009; 11:583-6. [DOI: 10.1021/ol802624e] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew C. Tadd
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, U.K., and AstraZeneca Process Research and Development, Silk Road Business Park, Macclesfield SK10 2NA, U.K
| | - Ai Matsuno
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, U.K., and AstraZeneca Process Research and Development, Silk Road Business Park, Macclesfield SK10 2NA, U.K
| | - Mark R. Fielding
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, U.K., and AstraZeneca Process Research and Development, Silk Road Business Park, Macclesfield SK10 2NA, U.K
| | - Michael C. Willis
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, U.K., and AstraZeneca Process Research and Development, Silk Road Business Park, Macclesfield SK10 2NA, U.K
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33
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Tadd AC, Fielding MR, Willis MC. Palladium-catalyzed aryl halide carbonylation–intramolecular O-enolate acylation: efficient isocoumarin synthesis, including the synthesis of thunberginol A. Chem Commun (Camb) 2009:6744-6. [DOI: 10.1039/b917839b] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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