Sensing Remote Chirality: Stereochemical Determination of β-, γ-, and δ-Chiral Carboxylic Acids
作者:Marina Tanasova、Mercy Anyika、Babak Borhan
DOI:10.1002/anie.201410371
日期:2015.3.27
nonfunctionalizable stereocenters is a challenging task. Presented is a solution in which appropriately substituted bis(porphyrin) tweezers are used. Complexation of a suitably derivatized β‐, γ‐, or δ‐chiral carboxylic acid to the tweezer induces a predictable helicity of the bis(porphyrin), which is detected as a bisignate Cotton Effect (ECCD). The sign of the ECCD curve is correlated with the absolute
确定带有远程不可官能化立体中心的小分子的绝对立体化学是一项艰巨的任务。提出了一种使用适当取代的双(卟啉)镊子的溶液。适当地衍生化的β-,γ-或δ-手性羧酸与镊子的络合可诱导双卟啉的可预测螺旋度,这被检测为二元棉花效应(ECCD)。ECCD曲线的符号基于派生的工作助记符以可预测的方式与基材的绝对立体化学相关。