Dynamic Covalent Organocatalysts Discovered from Catalytic Systems through Rapid Deconvolution Screening
作者:Fredrik Schaufelberger、Olof Ramström
DOI:10.1002/chem.201502088
日期:2015.9.1
The first example of a bifunctional organocatalyst assembled through dynamic covalent chemistry (DCC) is described. The catalyst is based on reversible imine chemistry and can catalyze the Morita–Baylis–Hillman (MBH) reaction of enones with aldehydes or N‐tosyl imines. Furthermore, these dynamic catalysts were shown to be optimizable through a systemic screening approach, in which large mixtures of
描述了通过动态共价化学(DCC)组装的双功能有机催化剂的第一个例子。该催化剂基于可逆的亚胺化学,可以催化烯酮与醛或氮的森田-贝利斯-希尔曼(MBH)反应甲苯磺酰基亚胺。此外,这些动态催化剂通过系统筛选方法显示是可优化的,在该方法中会生成大量催化剂结构混合物,并且可以通过使用动态反卷积直接确定最佳催化剂。该策略允许一锅合成和几种潜在催化剂的原位评估,而无需分离,表征和纯化每个单独的结构。该系统还被证明可以通过以前未知的硫脲催化的转氨过程来催化并重新平衡其自身的形成。