Cooperative assistance of a sulfonamide in a proline-mediated direct asymmetric aldol addition
作者:Kiran Kumari、Meeta Bhati、Roopendra Singh Madhukar、Akram Gulam Hussain Khan、Prachi Janjani、S. Rajagopala Reddy、Srinivasan Easwar
DOI:10.1039/d3nj02685j
日期:——
proline, cis to the –COOH group, to examine a possible intramolecular synergistic interaction between the two functional groups and the consequent influence on the enamine mediated asymmetric aldol reaction. The resultant catalyst was proficient in furnishing the aldol adducts in commendable yields, along with excellent diastereo- and enantioselectivities in the presence of water. The proposed cooperative
在脯氨酸的 C-4 位置引入磺酰胺部分,与 –COOH 基团顺式,以检查两个官能团之间可能存在的分子内协同相互作用以及对烯胺介导的不对称羟醛反应的影响。所得催化剂能够以值得称赞的产率有效地提供羟醛加合物,并且在水存在下具有优异的非对映选择性和对映选择性。拟议的合作援助也是一项简短的计算研究的主题,以获得更深入的了解。