المؤلفون: Tianyi Zheng, Yu Hu, Yike Li, Jiabin Zhu

المصدر: Journal of Engineering Education. 110:765-790

مصطلحات موضوعية: Knowledge management, business.industry, General Engineering, Context (language use), Sociology, business, Education, Professional skills

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::e476eb6cd4d9f240553d55bf08d2ee86Test
https://doi.org/10.1002/jee.20404Test

المؤلفون: Yan Zhang, Tianyi Zheng, Kun Tong, Shouyun Yu

المصدر: Advanced Synthesis & Catalysis. 357:3681-3686

مصطلحات موضوعية: chemistry.chemical_compound, chemistry, organic chemicals, Isocyanide, Reagent, Pyridine, heterocyclic compounds, General Chemistry, Alkylation, Photochemistry, Medicinal chemistry, Visible spectrum, Time profile

الوصف: A regiospecific synthesis of ortho-trifluoromethylated and ortho-(fluoro)alkylated pyridine derivatives has been developed. This strategy is enabled by visible light-promoted vinyl isocyanide insertions with Umemoto’s reagent and electron-deficient bromides at room temperature. The methodology presented here provides an access to highly functionalized ortho-(fluoro)alkylated pyridine derivatives regiospecifically under mild conditions with good yields. The proposed mechanism was supported by TEMPO trapping experiments, Stern–Volmer analysis and light off/on and time profile experiments.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::5114f44b78acc11b7e6f682ea03fdb67Test
https://doi.org/10.1002/adsc.201500674Test

المؤلفون: Peter Held, Petra Becker, Ladislav Bohatý, Tianyi Zheng, Helmut Schneeberger

المصدر: Crystal Research and Technology. 50:482-489

مصطلحات موضوعية: Crystallography, Antimony, Chemistry, Hexagonal crystal system, Inorganic chemistry, Polar, chemistry.chemical_element, General Materials Science, Crystal growth, General Chemistry, Crystal structure, Condensed Matter Physics, Pyroelectricity

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::3f85ada0ef829853dcda06e1b326dd52Test
https://doi.org/10.1002/crat.201500049Test

المؤلفون: Tianyi Zheng, Kun Tong, Heng Jiang, Shouyun Yu, Yan Zhang, Xiao-De An

المصدر: Angewandte Chemie. 127:4127-4131

مصطلحات موضوعية: Free Radicals, Light, Phenanthridine, Pyridines, General Chemistry, General Medicine, Electrophilic aromatic substitution, Photochemical Processes, Medicinal chemistry, Catalysis, Phenanthridines, Homolysis, chemistry.chemical_compound, Alkaloids, chemistry, Yield (chemistry), Intramolecular force, Oximes, Quinolines, Radical formation, Organic chemistry, Imines, Visible spectrum

الوصف: A unified strategy involving visible-light-induced iminyl-radical formation has been established for the construction of pyridines, quinolines, and phenanthridines from acyl oximes. With fac-[Ir(ppy)3 ] as a photoredox catalyst, the acyl oximes were converted by 1 e(-) reduction into iminyl radical intermediates, which then underwent intramolecular homolytic aromatic substitution (HAS) to give the N-containing arenes. These reactions proceeded with a broad range of substrates at room temperature in high yield. This strategy of visible-light-induced iminyl-radical formation was successfully applied to a five-step concise synthesis of benzo[c]phenanthridine alkaloids.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0bab586aa4494f6e5a8c0eca0e8da8afTest
https://doi.org/10.1002/ange.201411342Test

المؤلفون: Kun Tong, Shouyun Yu, Yan Zhang, Tianyi Zheng

المصدر: ChemInform. 47

مصطلحات موضوعية: chemistry.chemical_classification, chemistry.chemical_compound, chemistry, Isocyanide, Reagent, Pyridine, General Medicine, Alkylation, Medicinal chemistry, Alkyl, Visible spectrum

الوصف: This regiospecific synthesis of highly functionalized pyridine derivatives proceeds via visible light-promoted radical isocyanide insertions with Umemoto′s reagent (II) or (fluoro)alkyl bromides.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::281d05f37d4a935c00b1eabffc809025Test
https://doi.org/10.1002/chin.201614141Test

المؤلفون: Tianyi Zheng, Heng Jiang, Shouyun Yu, Xiao-De An, Yan Zhang, Kun Tong

المصدر: ChemInform. 46

مصطلحات موضوعية: chemistry.chemical_compound, Phenanthridine, Chemistry, Intramolecular force, Yield (chemistry), Radical formation, General Medicine, Electrophilic aromatic substitution, Medicinal chemistry, Visible spectrum, Catalysis, Homolysis

الوصف: A unified strategy involving visible-light-induced iminyl-radical formation has been established for the construction of pyridines, quinolines, and phenanthridines from acyl oximes. With fac-[Ir(ppy)3] as a photoredox catalyst, the acyl oximes were converted by 1 e− reduction into iminyl radical intermediates, which then underwent intramolecular homolytic aromatic substitution (HAS) to give the N-containing arenes. These reactions proceeded with a broad range of substrates at room temperature in high yield. This strategy of visible-light-induced iminyl-radical formation was successfully applied to a five-step concise synthesis of benzo[c]phenanthridine alkaloids.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::a1d6a9992685bd663f7cb8063f35c20fTest
https://doi.org/10.1002/chin.201531036Test