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30 results on '"Mao, Liu‐Liang"'

7. Tandem Sulfonylation/Cyclization of Vinyl Azides with Aryldiazonium Tetrafluoroborates and SO2.

Author

Chen, Fayun, Quan, Li‐Xia, Zhou, Anxi, Ji, Congbin, Li, Yanhong, Zhu, Xianhong, Mao, Liu‐Liang, and Wan, Jie‐Ping

Subjects
PHENANTHRIDINE, TETRAFLUOROBORATES, RING formation (Chemistry), AZIDES, SULFUR dioxide
Abstract

An efficient and facile strategy for the synthesis of 6‐(sulfonylmethyl)phenanthridines and its derivatives has been developed via tandem sulfonylation cyclization of vinyl azides under mild conditions in the absence of any catalysts and additives. The reaction simply utilizes easily accessible and cheap K2S2O5 as the sulfur dioxide source, delivering functionalized phenanthridines in moderate to excellent yields with operational simplicity and gram‐scale synthesis, as well as good functional‐group tolerance. [ABSTRACT FROM AUTHOR]

Published
2023
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14. Small-Molecule Targeting of E3 Ligase Adaptor SPOP in Kidney Cancer

Author

Guo, Zhong-Qiang, primary, Zheng, Tong, additional, Chen, Baoen, additional, Luo, Cheng, additional, Ouyang, Sisheng, additional, Gong, Shouzhe, additional, Li, Jiafei, additional, Mao, Liu-Liang, additional, Lian, Fulin, additional, Yang, Yong, additional, Huang, Yue, additional, Li, Li, additional, Lu, Jing, additional, Zhang, Bidong, additional, Zhou, Luming, additional, Ding, Hong, additional, Gao, Zhiwei, additional, Zhou, Liqun, additional, Li, Guoqiang, additional, Zhou, Ran, additional, Chen, Ke, additional, Liu, Jingqiu, additional, Wen, Yi, additional, Gong, Likun, additional, Ke, Yuwen, additional, Yang, Shang-Dong, additional, Qiu, Xiao-Bo, additional, Zhang, Naixia, additional, Ren, Jin, additional, Zhong, Dafang, additional, Yang, Cai-Guang, additional, Liu, Jiang, additional, and Jiang, Hualiang, additional

Published
2016
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25. Metal-Free, Efficient Oxyfluorination of Olefins forthe Synthesis of α-Fluoroketones.

Author

Yang, Qiang, Mao, Liu-Liang, Yang, Bin, and Yang, Shang-Dong

Subjects
*ALKENES, *FLUORINATION, *CHEMICAL reactions, *CATALYTIC activity, *FUNCTIONAL groups, *ORGANIC synthesis, *KETONES
Abstract

A noveloxyfluorination of olefin reactions has been developed.The reactions involve a metal-free and green catalytic system forthe synthesis of α-fluoroketones which is an important buildingblock for organic synthesis. Moreover, this reaction system exhibitsgreat functional group tolerance. [ABSTRACT FROM AUTHOR]

Published
2014
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28. Tandem Sulfonylation/Cyclization of Vinyl Azides with Aryldiazonium Tetrafluoroborates and SO2.

Author

Chen, Fayun, Quan, Li‐Xia, Zhou, Anxi, Ji, Congbin, Li, Yanhong, Zhu, Xianhong, Mao, Liu‐Liang, and Wan, Jie‐Ping

Subjects
*PHENANTHRIDINE, *TETRAFLUOROBORATES, *RING formation (Chemistry), *AZIDES, *SULFUR dioxide
Abstract

An efficient and facile strategy for the synthesis of 6‐(sulfonylmethyl)phenanthridines and its derivatives has been developed via tandem sulfonylation cyclization of vinyl azides under mild conditions in the absence of any catalysts and additives. The reaction simply utilizes easily accessible and cheap K2S2O5 as the sulfur dioxide source, delivering functionalized phenanthridines in moderate to excellent yields with operational simplicity and gram‐scale synthesis, as well as good functional‐group tolerance. [ABSTRACT FROM AUTHOR]

Published
2023
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29. Visible Light-Induced Radical Cascade Difluoromethylation/Cyclization of Unactivated Alkenes: Access to CF 2 H-Substituted Polycyclic Imidazoles.

Author

Lin SN, Deng Y, Zhong H, Mao LL, Ji CB, Zhu XH, Zhang X, and Yang BM

Abstract

An efficient and mild protocol for the visible light-induced radical cascade difluoromethylation/cyclization of imidazoles with unactivated alkenes using easily accessible and bench-stable difluoromethyltriphenylphosphonium bromide as the precursor of the -CF 2 H group has been developed to afford CF 2 H-substituted polycyclic imidazoles in moderate to good yields. This strategy, along with the construction of Csp 3 -CF 2 H/C-C bonds, is distinguished by mild conditions, no requirement of additives, simple operation, and wide substrate scope. In addition, the mechanistic experiments have indicated that the difluoromethyl radical pathway is essential for the methodology., Competing Interests: The authors declare no competing financial interest., (© 2024 The Authors. Published by American Chemical Society.)

Published
2024
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30. Visible-Light-Mediated Tandem Difluoromethylation/Cyclization of Alkenyl Aldehydes toward CF 2 H-Substituted Chroman-4-one Derivatives.

Author

Mao LL, Zhou AX, Zhu XH, Peng H, Quan LX, Wan JP, and Yang SD

Abstract

An efficient and facile visible-light-mediated tandem difluoromethylation/cyclization of alkenyl aldehydes, with easily accessible and air-stable [Ph 3 PCF 2 H] + Br - as the difluoromethylation reagent, has been established. A range of CF 2 H-substituted chroman-4-one skeletons and their derivatives, such as 2,3-dihydroquinolin-4(1 H )-ones, chroman, 3,4-dihydronaphthalen-1(2 H )-one, 2,3-dihydrobenzofuran, and 2,3-dihydro-1 H -inden-1-one, are efficiently produced in moderate to good yields with excellent chemoselectivity under mild reaction conditions.

Published
2022
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