AbstractDie Darstellung von neuen Vinylestern aromatischer und heterocyclischer Carbonsäuren nach bekannten Methoden wird beschrieben. Im Gegensatz zu den Literaturangaben wurde gefunden, daß auch Divinylestern aus Dicarbonsäuren durch direkte Vinylierung mit Acetylen darstellbar sind.
Donor specificity and regioselectivity in Lipolase mediated acylations of methyl α-d-glucopyranoside by vinyl esters of phenolic acids and their analogues
作者:Mária Mastihubová、Vladimír Mastihuba
DOI:10.1016/j.bmcl.2013.07.051
日期:2013.10
Methylα-d-glucopyranoside as a model acceptor was acylated by several phenolic and non-phenolic vinyl esters using immobilised Lipolase. Donor specificity and regioselectivity of reaction were investigated. Conversion and rate of acylation by structurally varied donors indicates that the synthetic reactivity of Lipolase corresponds to the hydrolytic activity of feruloyl esterase type A. Lipolase exhibited
The regioselective hydro/deuterophosphonylation of electron-richalkenes with P(O)H compounds has been realized via a metal-free electrochemically induced strategy, accessing various Markovnikov-type adducts in high yields. A series of monodeuterated organophosphorus compounds with high deuterium (D) incorporation are subsequently obtained by adding D2O as the D source. The protocol features broad