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A simple one pot nano titania mediated green synthesis of 2-alkylbenzimidazoles and indazole from aromatic azides under UV and solar light

Paper ID Volume ID Publish Year Pages File Format Full-Text
51184 46834 2009 5 PDF Available
Title
A simple one pot nano titania mediated green synthesis of 2-alkylbenzimidazoles and indazole from aromatic azides under UV and solar light
Abstract

TiO2-P25 and Ag/Pt doped TiO2 nanoparticles are efficient and highly chemo-selective photocatalysts for the reduction of aromatic azides to N-heterocyclics in O2-free alcoholic suspensions under solar and UV-A light. 2-Nitrophenyl azide with different alcohols on irradiation with TiO2 undergoes a combined redox reaction and condensation giving 2-alkylbenzimidazoles as the main product. In case of 2-nitrobenzyl azide, the reduced amine does not react with aldehyde but undergoes cyclization to form indazole. Doping of Ag/Pt enhanced the photoactivity of TiO2 significantly.

Keywords
2-Methylbenzimidazole; Indazole; Photocatalytic cyclization; Doped TiO2; Combined redox reactions
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A simple one pot nano titania mediated green synthesis of 2-alkylbenzimidazoles and indazole from aromatic azides under UV and solar light
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 4, 15 December 2009, Pages 280–284
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
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