Regio-Selective Nitration of Phenols Using Phosphorus Based Ionic Liquids

Authors

  • Anil U. Chopade   Deparment of Chemistry, Dahiwadi College Dahiwadi, Tal. Man, Satara ,India
  • Yeshawant V. Dharap  Division of Organic Chemistry, National Chemical Laboratory, Pune, India
  • Dinesh T. Gajulwar  Gramonnati Mandal’s Arts, Comm. & Science College, Narayngaon Pune, India
  • Manojkumar U. Chopade  Deparement of Chemistry, Sant Dnyaneshwer Mahavidyalaya, Soegaon, Aurangabad, India

Keywords:

Phosphonium Ionic Liquids, Nitration, Phenols: Regio-Selective

Abstract

Highly regio-selective mono nitration of phenols is accomplished using hydrated ferric nitrate as nitrating agent in phosphorous based ionic liquids in particular phosphonium ionic liquids viz, trihexyl (tetradecyl) phosphoniumtetrafluoroborate (PIL-1) and trihexyl (tetradecyl) phosphonium chloride (PIL-2) as the solvents. Trihexyl (tetradecyl) phosphoniumtetrafluroborate (PIL-1) is found to be more suitable even though the nitration rate was low. The higher rate of nitration in case of trihexyl (tetradecyl) phosphonium chloride PIL-2 may be due to high acidity. In particular, excellent paraselectivities were observed for the unsubstituted, orthoand metasubstituted phenols. The quantitative conversion was observed during all reactions making this methodology attractive for synthetic and commercial utility.

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International Journal of Scientific Research in Science and Technology

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Published

2017-12-15

Issue

Volume 3, Issue 9, November-December-2017

Section

Research Articles

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How to Cite

[1]
Anil U. Chopade ,Yeshawant V. Dharap, Dinesh T. Gajulwar, Manojkumar U. Chopade, " Regio-Selective Nitration of Phenols Using Phosphorus Based Ionic Liquids, International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011, Volume 3, Issue 9, pp.116-119, November-December-2017.