Acessibilidade / Reportar erro

Alum-catalyzed one-pot synthesis of dihydropyrano[3,2-b]chromenediones

A simple, green and efficient solventless procedure for the synthesis of eleven dihydropyrano[3,2-b]chromenediones from the three-component condensation reaction of kojic acid, aromatic aldehydes, and dimedone using a reusable alum as catalyst is described.

dihydropyrano[3,2-b]chromenedione; alum; kojic acid; solvent-free reaction


Sociedade Brasileira de Química Instituto de Química - UNICAMP, Caixa Postal 6154, 13083-970 Campinas SP - Brazil, Tel./FAX.: +55 19 3521-3151 - São Paulo - SP - Brazil
E-mail: office@jbcs.sbq.org.br