Brönsted acidic ionic liquid ([Hmim][HSO4]) as a green, efficient and reusable catalyst for the tetrahydropyranylation of alcohols

Authors

• Abdol R. Hajipour ^{1, 2}
• Fatemeh Rafiee ³

1. Pharmaceutical Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran.
2. Department of Pharmacology, University of Wisconsin, Medical School, 1300 University Avenue, Madison, 53706-1532, WI, USA.
3. Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Tehran, Iran

Abstract

A simple and mild method for tetrahydropyranylation of alcohols is reported at room temperature using a catalytic amount of 3-methylimidazolinium hydrogensulfate([Hmim]HSO₄) as a green, efficient and reusable catalyst. Using solvent-free conditions, non-toxic and inexpensive materials, modest and clean work-up, short reaction times and high yields of the products are the advantages of this method.

Keywords

• Catalyst
• Alcohols
• Brönsted acidic ionic liquids
• Tetrahydropyranylation