EventsThe 13th International Electronic Conference on Synthetic Organic Chemistry
Event submissions
Published
with-doi10.3390/ecsoc-13-00150
This submission belongs to the session e. Symposium on Microwave Assisted Synthesis of the event The 13th International Electronic Conference on Synthetic Organic Chemistry
Published date
30 Oct, 2009
Citation
Anshu Dandia, Kapil Arya, Microporous material: an efficient and recyclable catalyst for expedite regioselective synthesis of pyrimidobenzimidazoles, in Proceedings of The 13th International Electronic Conference on Synthetic Organic Chemistry, 1 November–30 November 2009, MDPI: Basel, Switzerland, doi: 10.3390/ecsoc-13-00150
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Microporous material: an efficient and recyclable catalyst for expedite regioselective synthesis of pyrimidobenzimidazoles

Anshu Dandia 1
Kapil Arya 2
1. Chemistry Department, University of Rajasthan, Jaipur-302004, India
2. Indian Oil Corporation Limited, R&D Center, Faridabad-121007, India
Abstract
Microporus materials are active catalysts in regioselective synthesis of pyrimidobenzimidazoles. Five kinds of zeolites were studied and they showed quite different catalytic activities due to their wide acid sites distributions and various pore structures. Hβ zeolite was found to be the best in activity for synthesis of isomer 5 while the basic catalyst NaY zeolite found suitable for synthesis of isomers 4. The main acid sites of H-zeolites were Brönsted acid sites, and H+ was the catalytic acid site. The methodology involves a ring closure by different ways based on the reaction medium was confirmed by NOE and X-ray studies.
Keywords
Microporus materials
Zeolite
Pyrimido[1,2-a]benzimidazole
Microwave irradiation
AuNPs immobilized onto gel-supported Ionic Liquid like phases (g-SILLPs) as catalysts under Microwave-Assisted Synthesis
Microwave-Assisted Synthesis of Phthalein Dyes