Potentially useful lipase-catalysed transesterifications

Abstract

Organic reactions catalysed by commercially available lipases, reported in recent years from our own laboratory and those published by others are described, confining the discussions to esterification and hydrolytic reactions only. The text gives an insight into the variety of substrates accepted by these lipases and their potential applications to catalyse reactions regio-, chemo-, enantio-and diastereoselectively to produce compounds of industrial, commercial, pharmaceutical and synthetic interest.

Microwave Dielectric Properties of New Complex Perovskites: (Ba1/3Ln2/3)(Zn1/3Ti2/3)O3 (Ln=La, Pr, and Nd) and (Ba(1+x)/3La(2-x)/3)(Zn1/3Ti(2-x)/3Nbx/3)O3

“…Rietveld refinement of XRD data was carried out for (Ba 1=3 La 2=3 )-(Zn 1=3 Ti 2=3 )O 3 , (Ba 1=3 Pr 2=3 )(Zn 1=3 Ti 2=3 )O 3 , and (Ba 5=12 -La 7=12 )(Zn 1=3 Ti 5=12 Nb 1=4 )O 3 using GSAS software. 21) The background was modelled by a shifted Chebyschev polynomial of the first kind with 12 variables and the peak profile was simulated with the pseudo-Voigt function. The refine-ment involved the cell parameter, scaling factor, twelve terms of background fitting, unit cell and the isotropic thermal parameters for all atoms.…”