Metal-Catalyzed Acyl Transfer Reactions of Enol Esters: Role of Y<sub>5</sub>(O<i><sup>i</sup></i>Pr)<sub>13</sub>O and (thd)<sub>2</sub>Y(O<i><sup>i</sup></i>Pr) as Transesterification Catalysts
作者:Mei-Huey Lin、T. V. RajanBabu
DOI:10.1021/ol0057131
日期:2000.4.1
catalytic amounts (0.05-1 mol %) of Y5(OiPr)13O to give the corresponding esters. In selected cases, the yttrium catalyst promotes the selective O-acylation of amino alcohols without the formation of the amide. Enol esters also react with alpha-amino acid esters in the absence of a catalyst, at room temperature, to give the corresponding amides.
Ethyl acetate as an acyl donor in the continuous flow kinetic resolution of (±)-1-phenylethylamine catalyzed by lipases
作者:Amanda S. de Miranda、Leandro S. M. Miranda、Rodrigo O. M. A. de Souza
DOI:10.1039/c3ob40437d
日期:——
The synthesis of chiralamines is still a challenge for organic synthesis since optically pure amines are of great importance for the pharmaceutical and agrochemical industries. Among all the methodologies developed until now, chemoenzymatic dynamic kineticresolution has proven to be useful for the preparation of enantioenriched primarychiralamines. In our continuous efforts toward the development