Citation: Swapnil S. Sonar, Sandip A. Sadaphal, Shivaji S. Pawar, Bapurao B. Shingate, Murlidhar S. Shingare. Microwave assisted convenient synthesis of quino[2,3-b] [1,5]benzoxazepines[J]. Chinese Chemical Letters, ;2009, 20(5): 557-561. doi: 10.1016/j.cclet.2009.01.031 shu

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

a Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, MS, India;
b Department of Chemistry, Vinayakrao Patil Mahavidyalaya Vaijapur, Aurangabad 423701, MS, India;
c National Chemical Laboratory, Pune 411008, MS, India

Received Date: 23 October 2008

Fund Project: The authors are thankful to the Head, Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, for providing laboratory facilities.

A convenient synthesis of quino[2,3-b] [1,5]benzoxazepines from substituted 2-chloroquinoline-3-carbaldehyde and 2-hydroxy aniline 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%).
- Quino[2,3-b][1,5]benzoxazepines,
- DBU/silica gel,
- Microwave irradiation,
- Solvent-free
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