title: A convenient and efficient protocol for the synthesis of acylals catalyzed by Brønsted acidic ionic liquids under ultrasonic irradiation.
abstract: The synthesis of acylals (1,1-diacetates) via the reactions of aldehydes with acetic anhydride was carried out in 85-97% yields at room temperature under ultrasound irradiation catalyzed by the Brønsted acidic ionic liquid [bmpy]HSO(4). This method provides several advantages, such as solvent-free conditions, operational simplicity, higher yields, and reduced environmental consequences. The ionic liquid was recovered and reused.
authors.affiliation: Division of Organic Chemistry, National Chemical Laboratory, Pune, India.
authors.forename: Sanjay P
authors.initials: SP
authors.lastname: Borikar
authors.forename: Thomas
authors.initials: T
authors.lastname: Daniel
mesh_terms: D000085:Acetates / Q000138:chemical synthesis* / Q000528:radiation effects*; D000143:Acids / Q000737:chemistry* / Q000528:radiation effects*; D000447:Aldehydes / Q000737:chemistry / Q000528:radiation effects; D002384:Catalysis / Q000528:radiation effects; D004952:Esters; D052578:Ionic Liquids / Q000737:chemistry* / Q000528:radiation effects*; D011829:Radiation Dosage; D013010:Sonication / Q000379:methods*
chemical_list: D000085:Acetates; D000143:Acids; D000447:Aldehydes; D004952:Esters; D052578:Ionic Liquids