Bp. Bandgar et al., Envirocat EPZG and natural clay as efficient catalysts for transesterification of beta-keto esters, GREEN CHEM, 3(1), 2001, pp. 39-41
Ethyl/methyl beta -keto esters react with various alcohols in the presence
of a catalytic amount of Envirocat EPZG or natural clay and undergo transes
terification effectively.