作者:Fredrik Schaufelberger、Karolina Seigel、Olof Ramström
DOI:10.1002/chem.202001666
日期:2020.12
of dynamic covalent chemistry, with applications such as preparation of functional systems, dynamic materials, molecular machines, and covalent organic frameworks. However, acid catalysis is commonly needed for efficient equilibration of imine mixtures. Herein, it is demonstrated that hydrogen bond donors such as thioureas and squaramides can catalyze the equilibration of dynamic imine systems under
亚胺键的可逆性已在动态共价化学领域得到了广泛的应用,例如功能体系的制备,动态材料,分子机器和共价有机骨架的制备。但是,为了有效平衡亚胺混合物,通常需要酸催化。在本文中,证明了在前所未有的温和条件下,氢键供体如硫脲和方酰胺可催化动态亚胺系统的平衡。催化作用发生在多种溶剂中,并且在许多敏感的添加剂的存在下,对于亚胺的复分解以及胺,肼和羟胺的转氨反应,显示出中等至良好的速率加速。此外,该催化剂易于固定,