title: Brønsted acid-catalyzed benzylation of 1,3-dicarbonyl derivatives.
abstract: The direct alkylation of 1,3-dicarbonyl compounds with benzylic alcohols is shown to be efficiently catalyzed by simple Brønsted acids such as triflic acid (TfOH) and p-toluenesulfonic acid (PTS) to give rise to monoalkylated dicarbonyl derivatives in high yields. In the absence of the nucleophile, substituted alkenes, generated through a formal dimerization reaction, are obtained. The reactions are carried out in air using undried solvents, with water being the only side product of the process.
authors: Departamento de Química, Area de Química OrgAnica, Facultad de Ciencias, Universidad de Burgos, Pza Misael Bañuelos s/n, 09001-Burgos, Spain. rsd@ubu.es
authors: Roberto
authors: R
authors: Sanz
authors: Delia
authors: D
authors: Miguel
authors: Alberto
authors: A
authors: Martínez
authors: Julia M
authors: JM
authors: Alvarez-Gutiérrez
authors: Félix
authors: F
authors: Rodríguez