title: Catalytic synthesis of α-oxoketene S,S-acetals in a wet ionic liquid [Bmim]Cl/H₂O homogeneous system.
abstract: A clean, practical and environmentally friendly synthesis in a homogeneous system has been developed for α-oxoketene S,S-acetals. A mixture of [Bmim]Cl and water was used as medium. The best economical and practical molar ratio of [Bmim]Cl to substrate was 4 to 1. With various types of 1,3-dicarbonyl compounds as substrate, the corresponding α-oxoketene S,S-acetals have been prepared under mild reaction conditions with yields of 53-74% after purification with silica gel column. [Bmim]Cl/water can be recycled several times.
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China. zygorl@vip.hl.cn.
authors.forename: Ping
authors.initials: P
authors.lastname: Yu
authors.forename: Yuangang
authors.initials: Y
authors.lastname: Zu
authors.forename: Yujie
authors.initials: Y
authors.lastname: Fu
authors.forename: Thomas
authors.initials: T
authors.lastname: Efferth
mesh_terms: D000080:Acetals / Q000138:chemical synthesis* / Q000737:chemistry; D002384:Catalysis; D007093:Imidazoles / Q000737:chemistry; D052578:Ionic Liquids / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D000080:Acetals; D007093:Imidazoles; D052578:Ionic Liquids; D014867:Water