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Mandrekar KS, Tilve SG. P 4O 10/TfOH mediated domino condensation-cyclization of amines with diacids: a route to indolizidine alkaloids under catalyst- and solvent-free conditions. RSC Adv 2022; 12:17701-17705. [PMID: 35765320 PMCID: PMC9200442 DOI: 10.1039/d2ra02534e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 05/25/2022] [Indexed: 12/03/2022] Open
Abstract
A domino condensation–cyclization method is developed to synthesize indolizidine alkaloids using a P4O10/TfOH reagent system without the employment of either a catalyst or solvent. The use of a few aliphatic and aromatic dicarboxylic acids is shown along with various primary amines. This method is suitable for synthesizing pyrrolo[2,1-a]isoquinolines, pyrido[2,1-a]isoquinolines, and isoindolo[1,2-a]isoquinolinones in excellent yields. When phthalic acid is used, a workup with either NaBH4 or a saturated NaHCO3 solution provided 12b-H or 12b-OH isoindolo[1,2-a]isoquinolinones, respectively. A highly efficient and direct methodology for the construction of pyrrolo[2,1-a]isoquinoline, pyrido[2,1-a]isoquinoline, and 12b-H and 12b-OH isoindolo[2,1-a]isoquinolinone alkaloids from commercially available synthons is devised.![]()
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Affiliation(s)
- Ketan S Mandrekar
- School of Chemical Sciences, Goa University Taleigao Goa 403206 India
| | - Santosh G Tilve
- School of Chemical Sciences, Goa University Taleigao Goa 403206 India
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2
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Vavsari VF, Nikbakht A, Balalaie S. Annulation of 2‐Alkynylanilines: The Versatile Chemical Compounds. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Vaezeh Fathi Vavsari
- KN Toosi: KN Toosi University of Technology Chemistry IRAN (ISLAMIC REPUBLIC OF)
| | - Ali Nikbakht
- K N Toosi University of Technology Faculty of General Science Chemistry Department of Chemistry, Kavian 9, Dr. Shariati Street 15875-4416 Tehran IRAN (ISLAMIC REPUBLIC OF)
| | - Saeed Balalaie
- K N Toosi University of Technology Faculty of General Science Chemistry Department PO Box 15875-4416 15875-4416 Tehran IRAN (ISLAMIC REPUBLIC OF)
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3
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4
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Krüll J, Hubert A, Nebel N, Prante O, Heinrich MR. Microwave‐Assisted Rapid One‐Pot Synthesis of Fused and Non‐Fused Indoles and 5‐[
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F]Fluoroindoles from Phenylazocarboxylates. Chemistry 2017; 23:16174-16178. [DOI: 10.1002/chem.201703890] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Jasmin Krüll
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry Friedrich-Alexander Universität Erlangen-Nürnberg Schuhstraße 19 91052 Erlangen Germany
| | - Anja Hubert
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry Friedrich-Alexander Universität Erlangen-Nürnberg Schuhstraße 19 91052 Erlangen Germany
| | - Natascha Nebel
- Department of Nuclear Medicine, Molecular Imaging and Radiochemistry Friedrich-Alexander-Universität Erlangen-Nürnberg Schwabachanlage 6 91054 Erlangen Germany
| | - Olaf Prante
- Department of Nuclear Medicine, Molecular Imaging and Radiochemistry Friedrich-Alexander-Universität Erlangen-Nürnberg Schwabachanlage 6 91054 Erlangen Germany
| | - Markus R. Heinrich
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry Friedrich-Alexander Universität Erlangen-Nürnberg Schuhstraße 19 91052 Erlangen Germany
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5
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Wang B, Tan Q, Lu J, Liang H. Facile synthesis of hyperbranched poly(p-phenyleneethynylene-alt-m-phenyleneethynylene) with narrow dispersity and high branching degree by sonogashira polymerization of an AB2monomer. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Biyun Wang
- DSAPM Lab, PCFM Lab, School of Chemistry; Sun Yat-Sen University; Guangzhou 510275 China
- Patent Examination Cooperation Center of the Patent Office, SIPO, Guangdong; Guangzhou 510535 China
| | - Qinglan Tan
- DSAPM Lab, PCFM Lab, School of Chemistry; Sun Yat-Sen University; Guangzhou 510275 China
| | - Jiang Lu
- DSAPM Lab, PCFM Lab, School of Chemistry; Sun Yat-Sen University; Guangzhou 510275 China
| | - Hui Liang
- DSAPM Lab, PCFM Lab, School of Chemistry; Sun Yat-Sen University; Guangzhou 510275 China
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6
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Hirai M, Terada S, Yoshida H, Ebine K, Hirata T, Kitagawa O. Catalytic Enantioselective Synthesis of N-C Axially Chiral Mebroqualone and Its Derivatives through Reductive Asymmetric Desymmetrization. Org Lett 2016; 18:5700-5703. [PMID: 27783530 DOI: 10.1021/acs.orglett.6b02865] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the presence of (R)-DTBM-SEGPHOS-Pd(OAc)2 catalyst, treatment of various 3-(2,6-dibromophenyl)quinazolin-4-ones with NaBH4 gave optically active N-C axially chiral quinazolinone (mebroqualone) derivatives through reductive asymmetric desymmetrization (enantioselective monohydrodebromination) followed by kinetic resolution of the resulting monobromophenyl products (up to 99% ee). The enantioselectivity strongly depended on the substituent (R2) at the C4'position, amount of NaBH4, and reaction temperature.
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Affiliation(s)
- Motohiro Hirai
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Shumpei Terada
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Hiroaki Yoshida
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Kenki Ebine
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Tomoaki Hirata
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
| | - Osamu Kitagawa
- Department of Applied Chemistry, Shibaura Institute of Technology , 3-7-5 Toyosu, Kohto-ku, Tokyo 135-8548, Japan
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7
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Diener ME, Metrano AJ, Kusano S, Miller SJ. Enantioselective synthesis of 3-arylquinazolin-4(3H)-ones via peptide-catalyzed atroposelective bromination. J Am Chem Soc 2015; 137:12369-77. [PMID: 26343278 PMCID: PMC5134330 DOI: 10.1021/jacs.5b07726] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report the development of a tertiary amine-containing β-turn peptide that catalyzes the atroposelective bromination of pharmaceutically relevant 3-arylquinazolin-4(3H)-ones (quinazolinones) with high levels of enantioinduction over a broad substrate scope. The structure of the free catalyst and the peptide-substrate complex were explored using X-ray crystallography and 2D-NOESY experiments. Quinazolinone rotational barriers about the chiral anilide axis were also studied using density functional theory calculations and are discussed in light of the high enantioselectivities observed. Mechanistic studies also suggest that the initial bromination event is stereodetermining, and the major monobromide intermediate is an atropisomerically stable, mono-ortho-substituted isomer. The observation of stereoisomerically stable monobromides stimulated the conversion of the tribromide products to other atropisomerically defined products of interest. For example, (1) a dehalogenation Suzuki-Miyaura cross-coupling sequence delivers ortho-arylated derivatives, and (2) a regioselective Buchwald-Hartwig amination procedure installs para-amine functionality. Stereochemical information was retained during these subsequent transformations.
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Affiliation(s)
| | | | | | - Scott J. Miller
- Department of Chemistry, Yale University, New Haven, CT 06520-8107, United States
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8
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Barrett KT, Miller SJ. Regioselective derivatizations of a tribrominated atropisomeric benzamide scaffold. Org Lett 2015; 17:580-3. [PMID: 25582814 PMCID: PMC4364386 DOI: 10.1021/ol503593y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The enantioselective synthesis of atropisomeric, tribrominated benzamides and subsequent regioselective transformations to afford derivatized, axially chiral molecules is reported. The enantioenriched tribromides were carried through sequential Pd-catalyzed cross-coupling and lithium-halogen exchange with high regioselectivity and enantioretention. A variety of complexity-generation functional group installations were performed to create a library of homochiral benzamides. The potential utility of these molecules is demonstrated by using a phosphino benzamide derivative as an asymmetric ligand in a Pd-catalyzed allylic alkylation.
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Affiliation(s)
- Kimberly T. Barrett
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Scott J. Miller
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
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9
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Hudson R, Bizier NP, Esdale KN, Katz JL. Synthesis of indoles, benzofurans, and related heterocycles via an acetylene-activated SNAr/intramolecular cyclization cascade sequence in water or DMSO. Org Biomol Chem 2015; 13:2273-84. [DOI: 10.1039/c4ob02549k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The synthesis of 2-substituted indoles and benzofurans was achieved by nucleophilic aromatic substitution, followed by subsequent 5-endo-dig cyclization between the nucleophile and an ortho acetylene.
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Affiliation(s)
- R. Hudson
- Department of Chemistry
- Colby College
- Waterville
- USA
| | - N. P. Bizier
- Division of Natural Sciences
- Daemen College
- Amherst
- USA
| | - K. N. Esdale
- Department of Chemistry
- Colby College
- Waterville
- USA
| | - J. L. Katz
- Department of Chemistry
- Colby College
- Waterville
- USA
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10
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Harris L, Gilpin M, Thompson AL, Cowley AR, Moloney MG. Uncatalysed diaryldiazo cyclopropanations on bicyclic lactams: access to annulated prolines. Org Biomol Chem 2015; 13:6522-50. [DOI: 10.1039/c5ob00648a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The uncatalysed cycloaddition of substituted diaryldiazo compounds onto bicyclic unsaturated lactams derived from pyroglutamic acid efficiently leads to highly functionalised azatricyclononanes.
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Affiliation(s)
- Lawrence Harris
- The Department of Chemistry
- Chemistry Research Laboratory
- The University of Oxford
- Oxford
- UK
| | | | - Amber L. Thompson
- The Department of Chemistry
- Chemistry Research Laboratory
- The University of Oxford
- Oxford
- UK
| | - Andrew R. Cowley
- The Department of Chemistry
- Chemistry Research Laboratory
- The University of Oxford
- Oxford
- UK
| | - Mark G. Moloney
- The Department of Chemistry
- Chemistry Research Laboratory
- The University of Oxford
- Oxford
- UK
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11
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Sharma U, Kancherla R, Naveen T, Agasti S, Maiti D. Palladium-Catalyzed Annulation of Diarylamines with Olefins through CH Activation: Direct Access to N-Arylindoles. Angew Chem Int Ed Engl 2014; 53:11895-9. [DOI: 10.1002/anie.201406284] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 08/01/2014] [Indexed: 01/08/2023]
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12
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Sharma U, Kancherla R, Naveen T, Agasti S, Maiti D. Palladium-Catalyzed Annulation of Diarylamines with Olefins through CH Activation: Direct Access to N-Arylindoles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406284] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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13
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Lim BY, Jung BE, Cho CG. Ene-hydrazide from Enol Triflate for the Regioselective Fischer Indole Synthesis. Org Lett 2014; 16:4492-5. [DOI: 10.1021/ol502031q] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Byeong-Yun Lim
- Center for New Directions
in Organic Synthesis, Department of Chemistry, Hanyang University, 222 Wangshimni-ro, Seongdong-gu, Seoul 133-791, Korea
| | - Bo-Eun Jung
- Center for New Directions
in Organic Synthesis, Department of Chemistry, Hanyang University, 222 Wangshimni-ro, Seongdong-gu, Seoul 133-791, Korea
| | - Cheon-Gyu Cho
- Center for New Directions
in Organic Synthesis, Department of Chemistry, Hanyang University, 222 Wangshimni-ro, Seongdong-gu, Seoul 133-791, Korea
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14
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Total Synthesis of Dictyodendrins B and E, and Formal Synthesis of Dictyodendrin C. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402672] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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White DE, Tadross PM, Lu Z, Jacobsen EN. A broadly applicable and practical oligomeric (salen) Co catalyst for enantioselective epoxide ring-opening reactions. Tetrahedron 2014; 70:4165-4180. [PMID: 25045188 PMCID: PMC4096935 DOI: 10.1016/j.tet.2014.03.043] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The (salen) Co catalyst (4a) can be prepared as a mixture of cyclic oligomers in a short, chromatography-free synthesis from inexpensive, commercially available precursors. This catalyst displays remarkable enhancements in reactivity and enantioselectivity relative to monomeric and other multimeric (salen) Co catalysts in a wide variety of enantioselective epoxide ring-opening reactions. The application of catalyst 4a is illustrated in the kinetic resolution of terminal epoxides by nucleophilic ring-opening with water, phenols, and primary alcohols; the desymmetrization of meso epoxides by addition of water and carbamates; and the desymmetrization of oxetanes by intramolecular ring opening with alcohols and phenols. The favorable solubility properties of complex 4a under the catalytic conditions facilitated mechanistic studies, allowing elucidation of the basis for the beneficial effect of oligomerization. Finally, a catalyst selection guide is provided to delineate the specific advantages of oligomeric catalyst 4a relative to (salen) Co monomer 1 for each reaction class.
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Affiliation(s)
- David E White
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Pamela M Tadross
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Zhe Lu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Eric N Jacobsen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
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16
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Yestrepsky BD, Kretz CA, Xu Y, Holmes A, Sun H, Ginsburg D, Larsen SD. Development of tag-free photoprobes for studies aimed at identifying the target of novel Group A Streptococcus antivirulence agents. Bioorg Med Chem Lett 2014; 24:1538-44. [PMID: 24559768 DOI: 10.1016/j.bmcl.2014.01.079] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 01/27/2014] [Indexed: 02/07/2023]
Abstract
We previously reported the identification and development of novel inhibitors of streptokinase (SK) expression by Group A Streptococcus (GAS), originating from a high throughput cell-based phenotypic screen. Although phenotypic screening is well-suited to identifying compounds that exert desired biological effects in potentially novel ways, it requires follow-up experiments to determine the macromolecular target(s) of active compounds. We therefore designed and synthesized several classes of chemical probes for target identification studies, guided by previously established structure-activity relationships. The probes were designed to first irreversibly photolabel target proteins in the intact bacteria, followed by cell lysis and click ligation with fluorescent tags to allow for visualization on SDS-PAGE gels. This stepwise, 'tag-free' approach allows for a significant reduction in molecular weight and polar surface area compared to full-length fluorescent or biotinylated probes, potentially enhancing membrane permeability and the maintenance of activity. Of the seven probes produced, the three most biologically active were employed in preliminary target identification trials. Despite the potent activity of these probes, specific labeling events were not conclusively observed due to a considerable degree of nonspecific protein binding. Nevertheless, the successful synthesis of potent biologically active probe molecules will serve as a starting point for initiating more sensitive methods of probe-based target identification.
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Affiliation(s)
- Bryan D Yestrepsky
- Vahlteich Medicinal Chemistry Core, Department of Medicinal Chemistry, University of Michigan, 428 Church St., Ann Arbor, MI 48109, United States
| | - Colin A Kretz
- Department of Human Genetics, Life Sciences Institute, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 48109, United States
| | - Yuanxi Xu
- Department of Internal Medicine, School of Medicine, University of Missouri-Columbia, 1 Hospital Dr., DC043.00, Columbia, MO 65212, United States
| | - Autumn Holmes
- Department of Human Genetics, Life Sciences Institute, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 48109, United States
| | - Hongmin Sun
- Department of Internal Medicine, School of Medicine, University of Missouri-Columbia, 1 Hospital Dr., DC043.00, Columbia, MO 65212, United States
| | - David Ginsburg
- Department of Human Genetics, Life Sciences Institute, University of Michigan, 210 Washtenaw Ave., Ann Arbor, MI 48109, United States
| | - Scott D Larsen
- Vahlteich Medicinal Chemistry Core, Department of Medicinal Chemistry, University of Michigan, 428 Church St., Ann Arbor, MI 48109, United States.
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17
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Birrell JA, Jacobsen EN. A practical method for the synthesis of highly enantioenriched trans-1,2-amino alcohols. Org Lett 2013; 15:2895-7. [PMID: 23742206 DOI: 10.1021/ol401013s] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A highly enantioselective addition of phenyl carbamate to meso-epoxides has been developed to efficiently generate protected trans-1,2-amino alcohols. This transformation is promoted by an oligomeric (salen)Co-OTf catalyst and has been used to prepare two useful 2-aminocycloalkanol hydrochlorides in enantiopure form on a multigram scale from commercially available starting materials.
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Affiliation(s)
- James A Birrell
- Department of Chemistry and Chemical Biology, Harvard University , Cambridge, Massachusetts 02138, United States
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18
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Paul N, Muthusubramanian S. Reaction of Diphenacylanilines with 2-Aminobenzophenone: An Abnormal Friedlander Reaction Yielding Indoles. SYNTHETIC COMMUN 2013. [DOI: 10.1080/00397911.2011.627524] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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DeAngelis A, Wang DH, Buchwald SL. Mild and Rapid Pd-Catalyzed Cross-Coupling with Hydrazine in Continuous Flow: Application to the Synthesis of Functionalized Heterocycles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208544] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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DeAngelis A, Wang DH, Buchwald SL. Mild and Rapid Pd-Catalyzed Cross-Coupling with Hydrazine in Continuous Flow: Application to the Synthesis of Functionalized Heterocycles. Angew Chem Int Ed Engl 2013; 52:3434-7. [DOI: 10.1002/anie.201208544] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Indexed: 11/11/2022]
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21
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Recent Developments in Recyclable Copper Catalyst Systems for C–N Bond Forming Cross-Coupling Reactions Using Aryl Halides and Arylboronic Acids. TOP ORGANOMETAL CHEM 2013. [DOI: 10.1007/3418_2012_58] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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22
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Park IK, Park J, Cho CG. Intramolecular Fischer Indole Synthesis and its Combination with an Aromatic [3,3]-Sigmatropic Rearrangement for the Preparation of Tricyclic Benzo[cd]indoles. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108970] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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23
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Park IK, Park J, Cho CG. Intramolecular Fischer Indole Synthesis and its Combination with an Aromatic [3,3]-Sigmatropic Rearrangement for the Preparation of Tricyclic Benzo[cd]indoles. Angew Chem Int Ed Engl 2012; 51:2496-9. [DOI: 10.1002/anie.201108970] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 01/03/2012] [Indexed: 11/06/2022]
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24
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Bartolucci S, Bartoccini F, Righi M, Piersanti G. Direct, Regioselective, and Chemoselective Preparation of Novel Boronated Tryptophans by Friedel–Crafts Alkylation. Org Lett 2011; 14:600-3. [DOI: 10.1021/ol203216h] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Silvia Bartolucci
- Department of Biomolecular Sciences, University of Urbino, Piazza Rinascimento 6, 61029 Urbino (PU), Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences, University of Urbino, Piazza Rinascimento 6, 61029 Urbino (PU), Italy
| | - Marika Righi
- Department of Biomolecular Sciences, University of Urbino, Piazza Rinascimento 6, 61029 Urbino (PU), Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences, University of Urbino, Piazza Rinascimento 6, 61029 Urbino (PU), Italy
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25
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Affiliation(s)
- Douglass F Taber
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA
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26
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Stanetty C, Blaukopf MK, Lachmann B, Noe CR. The Dinosyl Group: A Powerful Activator for the Regioselective Alcoholysis of Aziridines. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100358] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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27
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Gustafson JL, Lim D, Barrett KT, Miller SJ. Synthesis of Atropisomerically Defined, Highly Substituted Biaryl Scaffolds through Catalytic Enantioselective Bromination and Regioselective Cross-Coupling. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101147] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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28
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Gustafson JL, Lim D, Barrett KT, Miller SJ. Synthesis of atropisomerically defined, highly substituted biaryl scaffolds through catalytic enantioselective bromination and regioselective cross-coupling. Angew Chem Int Ed Engl 2011; 50:5125-9. [PMID: 21520374 DOI: 10.1002/anie.201101147] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Indexed: 01/04/2023]
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29
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Guilarte V, Castroviejo MP, García-García P, Fernández-Rodríguez MA, Sanz R. Approaches to the Synthesis of 2,3-Dihaloanilines. Useful Precursors of 4-Functionalized-1H-indoles. J Org Chem 2011; 76:3416-37. [DOI: 10.1021/jo200406f] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Verónica Guilarte
- Departamento de Química, Área de Química Orgánica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - M. Pilar Castroviejo
- Departamento de Química, Área de Química Orgánica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Patricia García-García
- Departamento de Química, Área de Química Orgánica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Manuel A. Fernández-Rodríguez
- Departamento de Química, Área de Química Orgánica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
| | - Roberto Sanz
- Departamento de Química, Área de Química Orgánica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001-Burgos, Spain
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30
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Park JY, Chae JH. Facile Access to a Variety of 2,5-Biaryl-1,2,4-triazol-3-ones via Regioselective N-Arylation of Triazolones. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.8.2143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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Solvent effects in the catalytic hydrotreament of haloaromatics over Pd/Al2O3 in water+organic mixtures. Chem Eng Sci 2010. [DOI: 10.1016/j.ces.2010.03.018] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Tsui GC, Menard F, Lautens M. Regioselective Rhodium(I)-Catalyzed Hydroarylation of Protected Allylic Amines with Arylboronic Acids. Org Lett 2010; 12:2456-9. [DOI: 10.1021/ol100974f] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gavin Chit Tsui
- Davenport Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5H 3H6
| | - Frederic Menard
- Davenport Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5H 3H6
| | - Mark Lautens
- Davenport Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5H 3H6
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33
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Mao H, Wan JP, Pan Y, Sun C. Synthesis of 2-substituted indoles via a palladium-catalyzed domino Heck reaction and dealkylation. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.01.113] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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34
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Sanz R, Guilarte V, García N. Synthesis of 4-functionalized-1H-indoles from 2,3-dihalophenols. Org Biomol Chem 2010; 8:3860-4. [DOI: 10.1039/c004360e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Ulysse LG, Yang Q, McLaws MD, Keefe DK, Guzzo PR, Haney BP. Process Development and Pilot-Scale Synthesis of New Cyclization Conditions of Substituted Phenylacetamides to Tetrahydroisoquinoline-2-ones Using Eaton’s Reagent. Org Process Res Dev 2009. [DOI: 10.1021/op9002533] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Luckner G. Ulysse
- Chemical Development Department, AMRI, P.O. Box 15098, Albany, New York 12212-5098, U.S.A
| | - Qiang Yang
- Chemical Development Department, AMRI, P.O. Box 15098, Albany, New York 12212-5098, U.S.A
| | - Mark D. McLaws
- Chemical Development Department, AMRI, P.O. Box 15098, Albany, New York 12212-5098, U.S.A
| | - Daniel K. Keefe
- Chemical Development Department, AMRI, P.O. Box 15098, Albany, New York 12212-5098, U.S.A
| | - Peter R. Guzzo
- Chemical Development Department, AMRI, P.O. Box 15098, Albany, New York 12212-5098, U.S.A
| | - Brian P. Haney
- Chemical Development Department, AMRI, P.O. Box 15098, Albany, New York 12212-5098, U.S.A
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36
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Park IK, Suh SE, Lim BY, Cho CG. Aryl Hydrazide beyond as Surrogate of Aryl Hydrazine in the Fischer Indolization: The Synthesis of N-Cbz-indoles, N-Cbz-carbazoles, and N,N′-Bis-Cbz-pyrrolo[2,3-f]indoles. Org Lett 2009; 11:5454-6. [PMID: 19886645 DOI: 10.1021/ol902250x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- In-Keol Park
- Department of Chemistry, Hanyang University, Seoul 133-791, Korea
| | - Sung-Eun Suh
- Department of Chemistry, Hanyang University, Seoul 133-791, Korea
| | - Byeong-Yun Lim
- Department of Chemistry, Hanyang University, Seoul 133-791, Korea
| | - Cheon-Gyu Cho
- Department of Chemistry, Hanyang University, Seoul 133-791, Korea
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37
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Jiang L, Lu X, Zhang H, Jiang Y, Ma D. CuI/4-Hydro-l-proline as a More Effective Catalytic System for Coupling of Aryl Bromides with N-Boc Hydrazine and Aqueous Ammonia. J Org Chem 2009; 74:4542-6. [DOI: 10.1021/jo9006738] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Liqin Jiang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China, and Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Xu Lu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China, and Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Hui Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China, and Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Yongwen Jiang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China, and Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Dawei Ma
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China, and Department of Chemistry, Shanghai University, Shanghai 200444, China
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38
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Barluenga J, Jiménez-Aquino A, Aznar F, Valdés C. Modular Synthesis of Indoles from Imines and o-Dihaloarenes or o-Chlorosulfonates by a Pd-Catalyzed Cascade Process. J Am Chem Soc 2009; 131:4031-41. [DOI: 10.1021/ja808652a] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José Barluenga
- Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al CSIC, Universidad de Oviedo, c/ Julián Clavería 8, 33006 Oviedo, Spain
| | - Agustín Jiménez-Aquino
- Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al CSIC, Universidad de Oviedo, c/ Julián Clavería 8, 33006 Oviedo, Spain
| | - Fernando Aznar
- Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al CSIC, Universidad de Oviedo, c/ Julián Clavería 8, 33006 Oviedo, Spain
| | - Carlos Valdés
- Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al CSIC, Universidad de Oviedo, c/ Julián Clavería 8, 33006 Oviedo, Spain
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39
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Evano G, Blanchard N, Toumi M. Copper-mediated coupling reactions and their applications in natural products and designed biomolecules synthesis. Chem Rev 2008; 108:3054-131. [PMID: 18698737 DOI: 10.1021/cr8002505] [Citation(s) in RCA: 1690] [Impact Index Per Article: 105.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Gwilherm Evano
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint Quentin en Yvelines, 45 avenue des Etats-Unis, 78035 Versailles Cedex, France.
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40
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Yamagishi H, Matsumoto K, Iwasaki K, Miyazaki T, Yokoshima S, Tokuyama H, Fukuyama T. Synthesis of eudistomin C and E: improved preparation of the indole unit. Org Lett 2008; 10:2369-72. [PMID: 18498172 DOI: 10.1021/ol800527p] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An improved synthesis of the indole unit, a key intermediate for eudistomin C, was established utilizing Makosza's indole synthesis. A concise total synthesis of eudistomin E was achieved on the basis of the improved synthesis.
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Affiliation(s)
- Hiroaki Yamagishi
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Tokyo, Japan
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41
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Synthesis of six-membered oxygenated heterocycles through carbon–oxygen bond-forming reactions. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.11.092] [Citation(s) in RCA: 212] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Zawisza AM, Muzart J. Pd-catalyzed reduction of aryl halides using dimethylformamide as the hydride source. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.07.077] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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43
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Affiliation(s)
- Guy R Humphrey
- Department of Process Research, Merck & Co., Inc., Rahway, New Jersey 07065, USA.
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44
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Ren H, Li Z, Knochel P. Chemoselective C(sp3)H Bond Activation for the Preparation of Condensed N-Heterocycles. Chem Asian J 2007; 2:416-33. [PMID: 17441179 DOI: 10.1002/asia.200600398] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Condensed N-heterocycles were prepared by using C-H activation reactions catalyzed by Pd(OAc)2 (5 mol %) and (p-tolyl)3P (10 mol %). The key step of these ring closures is chemoselective intramolecular C-H activation of the methyl group at position 2 of the pyrrole ring. Functionalized 9H-pyrrolo[1,2-a]indoles and pyrrolo[1,2-f]phenanthridine derivatives were prepared in good yields. The preparation of some complex N-heterocycles by using successive reactions is also described.
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Affiliation(s)
- Hongjun Ren
- Ludwig-Maximilians-Universität München, Department Chemie und Biochemie, Butenandtstrasse 5-13, Haus F, 81377 München, Germany
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45
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46
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Barberis C, Gordon TD, Thomas C, Zhang X, Cusack KP. Cu(I)-catalyzed intramolecular cyclization of ene-carbamates: synthesis of indoles and pyrrolo[2,3-c]pyridines. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.10.077] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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48
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Pelkey ET. Five-membered ring systems: pyrroles and benzo derivatives. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0959-6380(05)80328-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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49
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Lim YK, Jung JW, Lee H, Cho CG. Acid-Catalyzed Rearrangement of Diaryl Hydrazides for the Efficient Synthesis of Functionalized 2,2‘-Diamino-1,1‘-biaryls. J Org Chem 2004; 69:5778-81. [PMID: 15307758 DOI: 10.1021/jo049270g] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Diaryl hydrazides prepared from the Pd(0)- or Cu(I)-catalyzed coupling reactions of aryl hydrazides and aryl halides underwent the acid-catalyzed rearrangements to a series of previously unknown 2,2'-diaminobiaryls in good overall yields. The mildness of the reaction conditions allows the presence of various functional groups.
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Affiliation(s)
- Young-Kwan Lim
- Department of Chemistry, Hanyang University, Seoul 131-791, Korea
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