Relevant bibliographies by topics / Ethynyl benzoxazinanones

Academic literature on the topic 'Ethynyl benzoxazinanones'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Ethynyl benzoxazinanones"

1

Wang, Bao-Cheng, Ya-Ni Wang, Mao-Mao Zhang, Wen-Jing Xiao, and Liang-Qiu Lu. "Copper-catalyzed decarboxylative cyclization via tandem C–P and C–N bond formation: access to 2-phosphorylmethyl indoles." Chemical Communications 54, no. 25 (2018): 3154–57. http://dx.doi.org/10.1039/c8cc00739j.

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Wang, Sasa, Miao Liu, Xinzheng Chen, Huifei Wang, and Hongbin Zhai. "Copper-catalyzed decarboxylative propargylation/hydroamination reactions: access to C3 β-ketoester-functionalized indoles." Chemical Communications 54, no. 60 (2018): 8375–78. http://dx.doi.org/10.1039/c8cc04499f.

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A copper-catalyzed reaction of ethynyl benzoxazinanones with readily accessible β-ketoesters via a decarboxylative propargylation/hydroamination sequence has been developed. This protocol furnished a diverse range of C3 β-ketoester-functionalized indoles in good to excellent yields.
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3

Xiong, Jiale, Xiaoyun Zhao, Xing Feng, and Jiang Xianxing. "Decarboxylative Propargylation/Hydroamination/Aromatization Enabled by Copper/ Amine Cooperative Catalysis: Construction of Cyclopenta[b]indole Derivatives." Current Organic Chemistry 24, no. 12 (September 22, 2020): 1384–95. http://dx.doi.org/10.2174/1385272824999200701115141.

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An efficient decarboxylative cycloaddition of 2,3-dioxopyrrolidines and ethynyl benzoxazinanones has been established by cooperative copper/amine catalysis. A copper– allenylidene complex and enolate intermediate, each catalytically generated from distinct substrates, underwent a cascade propargylation/hydroamination/aromatization process to construct a big library of cyclopenta[b]indole derivatives with good to excellent yields and excellent diastereoselectivity.
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4

Wang, Lan, Feng Jiang, Xing Gao, Wei Wang, Yongjun Wu, Hongchao Guo, and Bing Zheng. "Base‐Mediated Decarboxylative [3+2] Annulation of Ethynyl Benzoxazinanones and Benzimidamides: Synthesis of Imidazole Derivatives." Advanced Synthesis & Catalysis 363, no. 8 (February 25, 2021): 2066–70. http://dx.doi.org/10.1002/adsc.202001550.

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5

Shao, Wen, Qing‐Feng Xu‐Xu, and Shu‐Li You. "Highly Diastereoselective Synthesis of Polycyclic Indolines through Formal [4+2] Propargylic Cycloaddition of Indoles with Ethynyl Benzoxazinanones." Chemistry – An Asian Journal 15, no. 16 (July 10, 2020): 2462–66. http://dx.doi.org/10.1002/asia.202000640.

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6

Zhang, Tao, Yifeng Ni, and Jiangtao Sun. "Copper-catalyzed reaction of benzoxazinanones with sulfilimines: access to 2-ethynyl-benzoimidazoles via an abnormal skeletal rearrangement." Organic & Biomolecular Chemistry, 2023. http://dx.doi.org/10.1039/d3ob00569k.

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7

Gannarapu, Malla Reddy, Takanori Imai, Kentaro Iwaki, Seiji Tsuzuki, and Norio Shibata. "Construction of poly-N-heterocyclic scaffolds via the controlled reactivity of Cu-allenylidene intermediates." Communications Chemistry 4, no. 1 (November 18, 2021). http://dx.doi.org/10.1038/s42004-021-00596-x.

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AbstractControlling the sequence of the three consecutive reactive carbon centres of Cu-allenylidene remains a challenge. One of the impressive achievements in this area is the Cu-catalyzed annulation of 4-ethynyl benzoxazinanones, which are transformed into zwitterionic Cu-stabilized allenylidenes that are trapped by interceptors to provide the annulation products. In principle, the reaction proceeds via a preferential γ-attack, while annulation reactions via an α- or β-attack are infrequent. Herein, we describe a method for controlling the annulation mode, by the manipulation of a CF3 or CH3 substituent, to make it proceed via either a γ-attack or an α- or β-attack. The annulation of CF3-substituted substrates with sulfamate-imines furnished densely functionalized N-heterocycles with excellent enantioselectivity via a cascade of an internal β-attack and an external α-attack. CH3-variants were transformed into different heterocycles that possess a spiral skeleton, via a cascade of an internal β-attack and a hydride α-migration followed by a Diels−Alder reaction.
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8

Chen, Guifang, and Bo Xu. "Divergent Synthesis of Sulfonyl Quinolines, Formyl Indoles, and Quinolones from Ethynyl Benzoxazinanones via AuI Catalysis, AuI-ArI Co-Catalysis, and Silver Catalysis." ACS Catalysis, June 1, 2022, 7134–41. http://dx.doi.org/10.1021/acscatal.2c02018.

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Dissertations / Theses on the topic "Ethynyl benzoxazinanones"

1

Ghosh, Biki. "Enantioselective Annulation Reactions: From Fischer Indolization to de novo Arene Construction." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/6014.

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In summary, we have developed the first decarboxylative [4+2]-annulation of ethynyl benzoxazinanones with azlactones for the enantioselective synthesis of cyclic α-quaternary α-acylaminoamides.25 This direct and modular approach combines dipolar copper-allenylidene intermediates and enolates generated from azlactones under bifunctional tertiary aminourea catalysis in a cooperative fashion. The resulting 3,4-dihydroquinolin-2-ones 3.43, bearing vicinal tertiary and quaternary stereogenic centers, are formed as a single diastereomer with good to excellent enantioselectivity. The products are densely functionalized and the synthetic versatility of the terminal alkyne group is demonstrated through a number of synthetic elaborations. This reaction represents the first direct catalytic enantioselective route to cyclic α-quaternary α-acylaminoamides
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