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Excellent Eco-Friendly Selective Alcohols Oxidation by an Acid Functionalized Imidazolium based Ionic Liquid

Author(s):

Manickam Deepa, Selvarasu Uthayanila, Ramasamy Shanmuga Priya, Gopalsamy Selvaraj Ganesh and Parasuraman Karthikeyan*   Pages 1 - 7 ( 7 )

Abstract:


Aims: A green route for the oxidation of alcohols to corresponding carbonyl compounds in room temperature ionic liquid ([CEMIM]BH4) was developed by using hydrogen peroxide as the oxygen source. In aqueous solution at room temperature, 0.2 mol% of ([CEMIM]BH4) showed excellent catalytic properties for selective oxidation of aromatic and aliphatic alcohols

Background: One of the vital reactions in organic synthesis is the oxidation of alcohols to carbonyl compounds. In particular, the conversion of primary alcohols to aldehydes has received a variety of applications as they are used as intermediates in fine chemicals mostly for the perfume industry.

Objective: In the present work, we have reported an effective green route for the selective oxidation of alcohols to the carbonyl compounds using peroxide in an ionic liquid 1-carboxyethyl-3-methyl-imidazolium tetrahydroborate ([CEMIM]BH4)

Methods: A mixture of alcohol (2 mmol), ([CEMIM]BH4) (0.2 mol%), H2O2 (2 mmol) were stirred thoroughly with the help of a magnetic stirrer for 10 min at ambient temperature Results: The catalytic activity of ([CEMIM]BH4) is very effective, which reflects its good solvating nature during the oxidation.

Conclusion: In conclusion, the series of experiments described represents a useful method for the oxidation of primary and secondary alcohols to carbonyl compounds at room temperature. The catalyst can be easily prepared and is therefore extremely cost-effective. The rapid reaction times for the substrates mean a large number of materials may be screened in parallel over a short period of time.

Keywords:

Green chemistry, oxidation, ionic liquid, heterogeneous catalyst, ketone, alcohol

Affiliation:

PG and Research Department of Chemistry Pachaiyappas College Campus, University of Madras Chennai-600 030, Tamilnadu, Department of Chemistry, Pachaiyappas College for Women Campus, University of Madras, Kanchipuram- 631501 Tamilnadu, PG and Research Department of Chemistry Pachaiyappas College Campus, University of Madras Chennai-600 030, Tamilnadu, PG and Research Department of Chemistry Pachaiyappas College Campus, University of Madras Chennai-600 030, Tamilnadu, PG and Research Department of Chemistry Pachaiyappas College Campus, University of Madras Chennai-600 030, Tamilnadu



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