Promiscuous Behavior of Rhizomucor miehei Lipase in the Synthesis of N-Substituted β-Amino Esters
作者:Leandro N. Monsalve、Florencia Gillanders、Alicia Baldessari
DOI:10.1002/ejoc.201101624
日期:2012.2
acrylates by using lipases as catalysts is reported. Various lipases, mono- and bifunctional amines, alkyl acrylates, and reaction parameters were studied. Under the optimal conditions, Rhizomucormieheilipase showed high selectivity. It catalyzed the formation of the Michael monoadduct as the only product in high yield and purity. Moreover, when diamines were used as nucleophiles, the lipase catalyzed the
Lipase-Catalyzed Aza-Michael Reaction on Acrylate Derivatives
作者:Peter Steunenberg、Maarten Sijm、Han Zuilhof、Johan P. M. Sanders、Elinor L. Scott、Maurice C. R. Franssen
DOI:10.1021/jo400268u
日期:2013.4.19
A methodology has been developed for an efficient and selective lipase-catalyzed aza-Michael reaction of various amines (primary and secondary) with a series of acrylates and alkylacrylates. Reaction parameters were tuned, and under the optimal conditions it was found that Pseudomonas viscosum lipase and Chromobacterium viscosum lipase showed the highest selectivity for the aza-Michael addition to substituted alkyl acrylates. For the first time also, some CLEAs were examined that showed a comparable or higher selectivity and yield than the free enzymes and other formulations.