Troponoid Atropisomerism: Studies on the Configurational Stability of Tropone-Amide Chiral Axes
作者:Danielle R. Hirsch、Anthony J. Metrano、Elizabeth A. Stone、Golo Storch、Scott J. Miller、Ryan P. Murelli
DOI:10.1021/acs.orglett.9b00707
日期:2019.4.5
Configurationally stable, atropisomeric motifs are an important structural element in a number of molecules, including chiral ligands, catalysts, and molecular devices. Thus, understanding features that stabilize chiral axes is of fundamental interest throughout the chemical sciences. The following details the high rotational barriers about the Ar–C(O) bond of tropone amides, which significantly exceed
构型稳定的阻转异构基序是许多分子中的重要结构元素,包括手性配体、催化剂和分子装置。因此,了解稳定手性轴的特征是整个化学科学的根本利益。下面详细介绍托酮酰胺的 Ar-C(O) 键的高旋转势垒,其明显超过类似的苯甲酰胺。这些研究得到了实验和计算旋转势垒测量的支持。我们还报告了轴向手性 α-羟基托酚酰胺解析为其各个阻转异构体,并证明了其在生理 pH 和温度下 24 小时内的构型稳定性。