Optimisation of the Enantioselective Synthesis of Cyanohydrin Esters
作者:Lars Veum、Liisa T. Kanerva、Peter J. Halling、Thomas Maschmeyer、Ulf Hanefeld
DOI:10.1002/adsc.200505031
日期:2005.6
lipase-catalysed enantioselectivesynthesis of cyanohydrin esters was investigated, and the problem of previously reported low yields due to residual water in the reaction mixture was addressed. When the lipase was immobilised on Celite R-633 as a carrier, both the enantioselectivity and the reaction times for this dynamic kineticresolution were improved, thus enabling a highlyenantioselectivesynthesis of aromatic
DABCO-Mediated Synthesis and Biological Activity of Cyanohydrin Esters
作者:H. M. R. Hoffmann、Z. M. Ismail、Reiner Hollweg、Abdul R. Zein
DOI:10.1246/bcsj.63.1807
日期:1990.6
Cyanohydrinesters 1–31 have been prepared from α-ketonitriles and aldehydes using DABCO (1,4-diazabicyclo[2.2.2] octane) as nucleophilic acylation catalyst. The modified piperonal 8 was found to inhibit the formation of thromboxane synthetase.