Facile Intramolecular Cyclization of N -(2-Hydroxybenzoyl)hydrazones to N ,N′ -Diacetyl Benzo-1,3,4-oxadiazepine Derivatives

Chan, Pei Qie and Lee, Yean Kee and Abd Rahman, Noorsaadah (2018) Facile Intramolecular Cyclization of N -(2-Hydroxybenzoyl)hydrazones to N ,N′ -Diacetyl Benzo-1,3,4-oxadiazepine Derivatives. Asian Journal of Organic Chemistry, 7 (4). pp. 707-710. ISSN 2193-5807, DOI https://doi.org/10.1002/ajoc.201800014.

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Official URL: https://doi.org/10.1002/ajoc.201800014


A facile synthesis of seven-membered benzo-1,3,4-oxadiazepines through one-step intramolecular cyclization of N-(2-hydroxybenzoyl)hydrazones has been established. The catalytic and substituent effects on the reactivity of this intramolecular cyclization were investigated. Through this strategy, a series of benzo-1,3,4-oxadiazepine derivatives were prepared (with yields up to 83 %).

Item Type: Article
Funders: Ministry of Education Malaysia (FRGS FP010-2014B)
Uncontrolled Keywords: benzo-1,3,4-oxadiazepine; Brønsted acids; cyclization; hydrazones; substituent effects
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 06 Sep 2019 06:35
Last Modified: 06 Sep 2019 06:35
URI: http://eprints.um.edu.my/id/eprint/22279

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