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Zhang Y, Ni Q, Pan B, Jiang L, Qiu L. Development of sterically hindered SPOs and enantioselective Ni−Al bimetallic catalyzed C−H cyclization of 4-oxoquinazolines with tethered alkenes. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Cai C, Zou D. Recent Progress in Benzylic C(sp 3)—H Functionalization of Toluene and Its Derivatives. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202201027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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ouerghi O, Geesi MH, Kaiba A, Anouar EH, Al-Tamimi AMS, Guionneau P, Ibnouf EO, Azzallou R, Bakht MA, Riadi Y. Synthesis, antibacterial evaluation, crystal structure and molecular interactions analysis of new 6-Bromo-2‑chloro‑3-butylquinazolin-4(3H)-one. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129166] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ding Y, Yan H, Chen R, Xiao X, Wang Z, Wang L, Ma Y. Expeditious Approach to Indoloquinazolinones via Double Annulations of o-Aminoacetophenones and Isocyanates. J Org Chem 2021; 86:1448-1455. [PMID: 33373228 DOI: 10.1021/acs.joc.0c02155] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A novel procedure for a one-pot cascade reaction of o-aminoacetophenones and aryl/aliphatic isocyanates catalyzed/oxidized by the [Pd]/[Ag] system was developed. The reaction involves two C-N bond and one C-C bond formations during the double annulation process and the desired indoloquinazolinones and derivatives were afforded up to 81% yields from readily available substrates with a tolerance of a broad variety.
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Affiliation(s)
- Yuxin Ding
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
| | - Huihui Yan
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
| | - Rener Chen
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Xuqiong Xiao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, No. 2318 Yuhangtang Road Hangzhou 311121, P R China
| | - Zhiming Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
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Tsukano C, Suetsugu S, Muto N, Takemoto Y. Synthesis of Tetrahydrobiphenylene <i>via</i> Pd(0)-Catalyzed C(<i>sp</i><sup>2</sup>)–H Functionalization. Chem Pharm Bull (Tokyo) 2017; 65:1167-1174. [DOI: 10.1248/cpb.c17-00737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Chihiro Tsukano
- Graduate School of Pharmaceutical Sciences, Kyoto University
| | | | - Nobusuke Muto
- Graduate School of Pharmaceutical Sciences, Kyoto University
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Tsukano C. Palladium(0)-Catalyzed Benzylic C( sp3)–H Functionalization for the Concise Synthesis of Heterocycles and Its Applications. Chem Pharm Bull (Tokyo) 2017; 65:409-425. [DOI: 10.1248/cpb.c16-00969] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Chihiro Tsukano
- Graduate School of Pharmaceutical Sciences, Kyoto University
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Suetsugu S, Muto N, Horinouchi M, Tsukano C, Takemoto Y. Synthesis and Application of Tetrahydro-2H-fluorenes by a Pd(0)-Catalyzed Benzylic C(sp(3) )-H Functionalization. Chemistry 2016; 22:8059-62. [PMID: 27124498 DOI: 10.1002/chem.201601086] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Indexed: 11/09/2022]
Abstract
A new method has been developed for the synthesis of tetrahydro-2H-fluorenes based on a Pd(0)-catalyzed benzylic C(sp(3) )-H functionalization. Importantly, the success of the cyclization step was dependent on there being substituents at the two positions ortho to the benzylic group to avoid an undesired C(sp(2) )-H functionalization. This method was subsequently used to prepare the right-hand fragment of the hexacyclic triterpenoid benzohopanes, and therefore represents a powerful tool for the construction of the related compounds.
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Affiliation(s)
- Satoshi Suetsugu
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Nobusuke Muto
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Misa Horinouchi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Chihiro Tsukano
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan.
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Pedroni J, Cramer N. 2-(Trifluoromethyl)indoles via Pd(0)-Catalyzed C(sp(3))-H Functionalization of Trifluoroacetimidoyl Chlorides. Org Lett 2016; 18:1932-5. [PMID: 27054603 DOI: 10.1021/acs.orglett.6b00795] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Perfluoroalkylated indoles are valuable compounds in drug discovery. A Pd(0)-catalyzed C(sp(3))-H functionalization enables access to 2-(trifluoromethyl)indoles from trifluoroacetimidoyl chlorides. These are stable compounds, easily obtained from anilines. The cyclization operates with catalyst loadings as low as 1 mol % and accommodates a variety of substituents.
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Affiliation(s)
- Julia Pedroni
- Laboratory of Asymmetric Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne , EPFL SB ISIC LCSA, BCH 4305, CH-1015 Lausanne, Switzerland
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne , EPFL SB ISIC LCSA, BCH 4305, CH-1015 Lausanne, Switzerland
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Ryan JH, Smith JA, Hyland C, Meyer AG, Williams CC, Bissember AC, Just J. Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/b978-0-08-100024-3.00016-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Tsukano C, Muto N, Enkhtaivan I, Takemoto Y. Synthesis of Pyrrolophenanthridine Alkaloids Based on C(sp3)H and C(sp2)H Functionalization Reactions. Chem Asian J 2014; 9:2628-34. [DOI: 10.1002/asia.201402490] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 05/30/2014] [Indexed: 12/28/2022]
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Takemoto Y, Tsukano C. Synthetic Approaches to Spiro-oxindoles and Iminoindolines Based on Formation of C2–C3 Bond. HETEROCYCLES 2014. [DOI: 10.3987/rev-14-805] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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