Synthesis and characterization of novel, optically active polyamides derived from S-valine natural amino acid and bulky anthracenic side chain
作者:Shadpour Mallakpour、Fatemeh Mirkarimi
DOI:10.1007/s00726-010-0560-0
日期:2010.11
of molten tetrabutylammonium bromide (TBAB) in the presence of triphenyl phosphite (TPP) for the synthesis of novel polyamides (PAs). Monomer diacid, 5-[(9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboximido)-3-methylbutanoylamino]isophthalic acid (4), having anthracenic and amino acid S-valine pendant group, was synthesized in four steps. Several novel, optically active PAs were prepared by the condensation
这是在亚磷酸三苯酯(TPP)存在下将熔融四丁基溴化铵(TBAB)应用于合成新型聚酰胺(PAs)的首次描述。合成了具有蒽和氨基酸S-缬氨酸侧基的单体二酸5-[(9,10-二氢-9,10-乙基蒽基-11,12-二苯甲酰亚胺基)-3-甲基丁酰基氨基]间苯二甲酸(4)。四个步骤。通过使用两种不同的技术,通过将合成的二酸单体4与各种芳族二胺缩合来制备几种新颖的旋光PA,它们是:N的混合物-甲基-2-吡咯烷酮(NMP)/ TPP /吡啶/氯化钙(方法I)以及TPP与TBAB的组合(方法II)。本文的主要目的是通过去除有毒试剂在绿色介质中制备新型PA。因此,TBAB / TPP被用作制备芳族PA的一种新颖,简便,安全且环保的方法。将该方法与常规溶剂下的聚合反应进行了比较,在以TBAB为新方法的情况下,PA的收率更高,固有粘度和热稳定性更高。所得聚合物在极性非质子溶剂如二甲基亚砜,NMP,N,N-二甲基乙