P. Kumar et Rk. Pandey, A facile and selective procedure for transesterification of beta-keto esters promoted by yttria-zirconia based Lewis acid catalyst, SYNLETT, (2), 2000, pp. 251-253
An yttria-zirconia based strong Lewis acid efficiently catalyses the transe
sterification of beta-keto esters under environmentally safe, heterogeneous
reaction conditions with high selectivity and in good to excellent yields.