✦ LIBER ✦

Convenient synthesis of 6-substituted-2-chloro-5,12-dihydro-5-oxobenzoxazolo[3,2-a]quinolines and N-acylated-3-chlorodibenz[b,e][1,4]oxazepin-11(5H)-ones

✍ Scribed by Sang J. Chung; Keum Chan Joo; Dong H. Kim

Publisher: Journal of Heterocyclic Chemistry
Year: 1997
Tongue: English
Weight: 195 KB
Volume: 34
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570340221

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✦ Synopsis

Abstract

Convenient synthesis of variously substituted 2‐chloro‐5,12‐dihydro‐5‐oxobenzoxazolo[3,2‐a]quinolines at the 6‐position and N‐acylated‐3‐chlorodibenz[b,e][1,4]oxazepin‐11(5__H__)‐ones are reported. The former compounds were obtained in 65–93% yield by simply heating N‐acyl‐4‐chloro‐N‐(2‐hydroxyphenyl)‐anthranilic acids in acetic anhydride for 4 hours, and the latter by heating sodium salt of N‐acyl‐4‐chloro‐N‐(2‐hydroxyphenyl)anthranilic acids with acetic anhydride.

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