Mechanistic studies of DCC/HOBt-mediated reaction of 3-phenylpropionic acid with benzyl alcohol and studies on the reactivities of ‘active ester’ and the related derivatives with nucleophiles
作者:Md. Chanmiya Sheikh、Shunsuke Takagi、Toshiaki Yoshimura、Hiroyuki Morita
DOI:10.1016/j.tet.2010.07.011
日期:2010.9
extensive study for peptide synthesis, DCC-mediated esterification is left still unclear. Therefore, DCC- and DCC/HOBt-mediated reactions of 3-phenylpropionic acid (1) with benzyl alcohol were carried out under several mechanistic considerations. Further, in order to determine the reactivities of the so-called ‘active esters’ compounds changing the substituents bearing carbonyl and related derivatives group
尽管对肽合成进行了广泛的研究,但DCC介导的酯化反应仍不清楚。因此,在多种机理上考虑了进行3-苯基丙酸(1)与苯甲醇的DCC和DCC / HOBt介导的反应。此外,为了确定新的“非对称交联剂”的开发目的,为了确定改变带有羰基和相关衍生物基团的取代基的所谓“活性酯”化合物的反应性,我们研究了模型化合物,N-(3-苯基丙酰氧基)苯并三唑(6),N-(3-苯基丙酰氧基)苯邻二甲酰亚胺(7),3-苯基丙酰氧基苯并噻唑(8)和进行N-(3-苯基丙酰基)苯并三唑(9)与各种亲核试剂在相似条件下的比较。它显示出具有6 >> 8 > 9 > 7的顺序。