nucleophilic cyclization
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Synthesis ◽  
2020 ◽  
Vol 52 (21) ◽  
pp. 3263-3271
Author(s):  
Andrey V. Smolobochkin ◽  
Almir S. Gazizov ◽  
Nazerke K. Otegen ◽  
Julia K. Voronina ◽  
Anna G. Strelnik ◽  
...  

Imidazolidin-2-one and 1,3-benzodiazepin-2-one scaffolds are structural motifs of many biologically active compounds. Herein, we report a highly regioselective acid-catalyzed intramolecular nucleophilic cyclization/intermolecular electrophilic substitution reaction sequence of (2,2-dialkoxyethyl)ureas. The reaction benefits from readily available starting materials, a simple workup procedure, moderate to high yields of target compounds, and provides a convenient entry to previously unknown 4-(het)arylimidazolidinones and 5-(het)arylbenzodiazepinones. The proposed mechanism of the reaction is also discussed.


2020 ◽  
Vol 85 (11) ◽  
pp. 7036-7044 ◽  
Author(s):  
Jie Zhang ◽  
Jia-Yin Wang ◽  
Min-Hua Huang ◽  
Wen-Juan Hao ◽  
Xing-Chao Tu ◽  
...  

2020 ◽  
Vol 56 (78) ◽  
pp. 11621-11624
Author(s):  
Yanbin Zhang ◽  
Ruiwen Jin ◽  
Guangxing Pan ◽  
Hao Guo

Light-enabled, AlCl3-catalyzed regioselective intramolecular nucleophilic cyclization of alkynes using non-nucleophilic alkyls as the nucleophile is reported.


2019 ◽  
Vol 141 (24) ◽  
pp. 9527-9532 ◽  
Author(s):  
Miaomiao Tian ◽  
Dachang Bai ◽  
Guangfan Zheng ◽  
Junbiao Chang ◽  
Xingwei Li

2019 ◽  
Vol 21 (12) ◽  
pp. 4662-4666 ◽  
Author(s):  
Jiaqiong Sun ◽  
Kuan Wang ◽  
Peiyuan Wang ◽  
Guangfan Zheng ◽  
Xingwei Li

2019 ◽  
Vol 60 (26) ◽  
pp. 1691-1695 ◽  
Author(s):  
Jianhui Liu ◽  
Yawen Dong ◽  
Guanglan Li ◽  
Xiangting Min ◽  
Mustafa Hussain

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