The resolution of ibuprofen by transesterification of its corresponding vin
ylester using lipase B from Candida antarctica is described. Compared to tr
ansesterification or hydrolysis of the ibuprofen ethyl ester (E < 2, 28-48
h), the reaction with vinylesters occurred significantly faster (1.5-5 h) a
nd with considerably higher enantioselectivity (E = 8-39).