Investigation of the lipase-catalysed reaction of aliphatic amines with ethyl propiolate as a route to N-substituted propiolamides
作者:Simon Bonte、Ioana Otilia Ghinea、Isabelle Baussanne、Jean-Paul Xuereb、Rodica Dinica、Martine Demeunynck
DOI:10.1016/j.tet.2013.04.093
日期:2013.7
The lipase-catalysed reaction of aliphatic amine with ethyl propiolate was investigated using benzylamine as reference amine. The conditions were optimised to favour the 1,2-addition, i.e., formation of N-benzylprop-2-ynamide, versus the 1,4-addition. Immobilised Candida antarctica lipase (CALB) was found to be the most efficient enzyme, and the reactions were performed in solvents, such as tBME, dioxane
以苄胺为参比胺,研究了脂肪胺与丙酸乙酯的脂肪酶催化反应。优化条件以有利于1,2-加成,即形成N-苄基丙-2-炔酰胺,而不是1,4-加成。发现固定化的南极假丝酵母脂肪酶(CALB)是最有效的酶,并且反应在溶剂中进行,例如t BME,二恶烷或甲苯。该方法用于从脂肪族胺以良好至优异的产率制备丙丙酰胺。在相同条件下比较了O-和S-亲核试剂的反应性。