- Modulation of sensitivity to mechanical stimulus in mechanofluorochromic properties by altering substituent positions in solid-state emissive diiodo boron diiminates
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This manuscript describes modulation of the sensitivity to mechanical forces in diiodo boron diiminates by altering the substituent position of iodine groups. A series of modified complexes were prepared, and their solid-state luminescence properties base
- Yamaguchi, Madoka,Ito, Shunichiro,Hirose, Amane,Tanaka, Kazuo,Chujo, Yoshiki
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- Visible-Light Carbon Nitride-Catalyzed Aerobic Cyclization of Thiobenzanilides under Ambient Air Conditions
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A metal-free heterogeneous photocatalysis has been developed for the synthesis of benzothiazoles via intramolecular C-H functionalization/C-S bond formation of thiobenzanilides by inexpensive graphitic carbon nitride (g-C3N4) under visible-light irradiation. This reaction provides access to a broad range of 2-substituted benzothiazoles in high yields under an air atmosphere at room temperature without addition of a strong base or organic oxidizing reagents. In addition, the catalyst was found to be stable and reusable after five reaction cycles.
- Bai, Jin,Yan, Sijia,Zhang, Zhuxia,Guo, Zhen,Zhou, Cong-Ying
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supporting information
p. 4843 - 4848
(2021/06/28)
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- Efficient Pd-Catalyzed Hydrodehalogenation of o -Haloanilides in Water
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In the present work, we have developed a practical methodology for the hydrodehalogenation of o -haloanilides using PdCl 2at 100 °C under mild conditions in water. The catalytic system could selectively dehalogenate both aryl chloride and aryl bromide and exhibit a broad functional group tolerance.
- Gao, Hui,Li, Minxin,Mao, Zewei,Rao, Gaoxiong,Tang, Yanling
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supporting information
p. 1121 - 1125
(2020/07/03)
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- Exogenous Photosensitizer-, Metal-, and Base-Free Visible-Light-Promoted C-H Thiolation via Reverse Hydrogen Atom Transfer
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Visible-light-driven, intramolecular C(sp2)-H thiolation has been achieved without addition of a photosensitizer, metal catalyst, or base. This reaction induces the cyclization of thiobenzanilides to benzothiazoles. The substrate absorbs visible light, and its excited state undergoes a reverse hydrogen-atom transfer (RHAT) with 2,2,6,6-tetramethylpiperidine N-oxyl to form a sulfur radical. The addition of the sulfur radical to the benzene ring gives an aryl radical, which then rearomatizes to benzothiazole via RHAT.
- Xu, Ze-Ming,Li, Hong-Xi,Young, David James,Zhu, Da-Liang,Li, Hai-Yan,Lang, Jian-Ping
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supporting information
p. 237 - 241
(2019/01/10)
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- Synthesis of N -Aryl Amides by Ligand-Free Copper-Catalyzed ipso -Amidation of Arylboronic Acids with Nitriles
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A facile copper-catalyzed ipso-amidation of arylboronic acids with nitriles has been developed. The method provides a highly efficient and economical synthesis of N-aryl amides with a broad substrate scope.
- Qiao, Yan,Li, Gaoqiang,Liu, Sha,Yangkai, Yujie,Tu, Jingxuan,Xu, Feng
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supporting information
p. 1834 - 1838
(2017/04/06)
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- Ligand-free CuTC-catalyzed N-arylation of amides, anilines and 4-aminoantipyrine: Synthesis of N-arylacrylamides, 4-amido-N-phenylbenzamides and 4-amino(N-phenyl)antipyrenes
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N-Arylation of amides and anilines with aryl iodides was efficiently catalyzed by copper thiophenecarboxylate under ligand-free conditions with good to excellent yields. A variety of substituted aryl iodides, amides, anilines and 4-aminoantipyrine were found to be applicable to the simple catalytic system. Furthermore, some practical, unique secondary amides, such as N-arylacrylamides and 4-amido-N-phenylbenzamides, and 4-amino(N-phenyl)antipyrenes, which are difficult to obtain by the classical methods, were prepared.
- Quan, Zheng-Jun,Xia, Hai-Dong,Zhang, Zhang,Da, Yu-Xia,Wang, Xi-Cun
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- An efficient copper-catalyzed N-arylation of amides: Synthesis of N-arylacrylamides and 4-amido-N-phenylbenzamides
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Copper-catalyzed intermolecular C-N bond-forming reactions between aryl iodides and amides are described using sodium ascorbate, which is both cheap and nontoxic, as the additive. A variety of functionalized amides including some practical, unique secondary amides, such as N-arylacrylamides and 4-amido-N-phenylbenzamides, which are difficult to obtain by the classical methods, are prepared. Furthermore, some tertiary amides are prepared by using copper thiophenecarboxylate.
- Quan, Zheng-Jun,Xia, Hai-Dong,Zhang, Zhang,Da, Yu-Xia,Wang, Xi-Cun
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p. 8368 - 8374
(2013/09/02)
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