An efficient microwave assisted synthesis of triphenodioxazines using Chloranil as oxidizing agent. | [Journal of Chemical Society of Pakistan • 2016]

Author(s):

1. Muhammad Najeebullah: Institute of Chemistry, University of the Punjab, Lahore, Pakistan;School of Chemistry, Cardiff University, Main College, Park Place, Cardiff UK, CF10 3AT; Pakistan Council of Scientific and Industrial Research Laboratories, Lahore, Pakistan; Government Islamia College, Civil Lines, Lahore, Higher Education Department, Government of the Punjab, Pakistan

2. Munawar Ali Munawar: Institute of Chemistry, University of the Punjab, Lahore, Pakistan

3. David William Knight: School of Chemistry, Cardiff University, Main College, Park Place, UK

4. Misbahul Ain Khan: Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, Pakistan

5. Amran Waheed: Pakistan Council of Scientific and Industrial Research Laboratories, Lahore, Pakistan

6. Khalid Mohammed Khan: HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, Pakistan

Abstract:

An efficient new method for the preparation of triphenodioxazines (TPDOs) using p-chloranil as oxidizing agent in conc. H2SO4 under microwave irradiation at 120oC is reported. This method is more efficient than the previously described microwave method using potassium persulfate as oxidising agent in conc. H2SO4 as it provides the cyclized product within 8-10 minutes with comparatively higher yields.

Page(s): 318-325

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 38, Issue: 2, Year: 2016

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