Microwave assisted convenient synthesis of quino[2,3-b][1,5]benzoxazepines

TitleMicrowave assisted convenient synthesis of quino[2,3-b][1,5]benzoxazepines
Publication TypeJournal Article
Year of Publication2009
AuthorsSonar, SS, Sadaphal, SA, Pawar, SS, Shingate, BB, Shingare, MS
JournalChinese Chemical Letters
Volume20
Issue5
Pagination557-561
Date PublishedMAY
ISSN1001-8417
Keywords3-b][1, 5]benzoxazepines, DBU/silica gel, Microwave irradiatiom, Quino[2, Solvent-free
Abstract

A convenient synthesis of quino[2,3-b][1,5]benzoxazepines from substituted 2-chloroquinoline-3-carbaldehyde and 2-hydroxyaniline by using stable, non-toxic and inexpensive catalyst 1,8-diazabicyclo-undecan-7-ene (DBU)/silica gel is described. This method affords the quino[2,3-b][1,5]benzoxazepines under the influence of microwave irradiation (360 W) in solvent-free conditions within short reaction times (2-3 min), giving high yields of products (93-96%). (C) 2009 Murlidhar S. Shingare. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

DOI10.1016/j.cclet.2009.01.031
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

0.775

Divison category: 
Organic Chemistry
Physical and Materials Chemistry