POCl3-mediated synthesis of 2-N-arylimino-4-chloro-3-dichloromethylcoumarin and its conversion into 6H-[1]benzopyrano[4,3-b]quinolin-6-one

被引：0
|
作者：
Maiti, Sourav [1 ]
Biswas, Pritam [1 ]
Ghosh, Jaydip [1 ]
Bandyopadhyay, Chandrakanta [1 ]
机构：
[1] RK Mission Vivekananda Centenary Coll, Dept Chem, Kolkata 700118, India
来源：
JOURNAL OF THE INDIAN CHEMICAL SOCIETY | 2013年 / 90卷 / 10期
关键词：
2-Aminochromone; iminocoumarin; benzopyranoquinoline; POCl3; gem-dihalide; AROMATIC-ALDEHYDES; HIGHLY EFFICIENT; COUMARIN; DICHLORIDES; CHEMISTRY;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
On heating in POCl3, 2-(N-aryl)aminochromone-3-carbaldehyde produced 2-N-arylimino-4-chloro-3-dichloromethylcoumarin, which undergoes selective acid-catalyzed hydrolysis of its imino function to produce 4-chloro-3-dichloromethylcoumarin. The hydrolyzed product was transformed into 6H-Mbenzopyrano[4,3-b]quinolin-6-one by reaction with aromatic primary amines.
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页码：1617 / 1623
页数：7
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