H-Bond-Directing Organocatalyst for Enantioselective [4 + 2] Cycloadditions via Dienamine Catalysis
作者:Shoulei Wang、Carles Rodriguez-Escrich、Miquel A. Pericàs
DOI:10.1021/acs.orglett.5b03575
日期:2016.2.5
regio- and stereoselective [4 + 2] cycloaddition reaction to generate tetrahydropyranopyrazole frameworks has been developed. To this end, a dienamine-based catalytic strategy that relies on the H-bond-directing effect of the hydroxy group of a dinaphthylprolinol-type aminocatalyst has been used. This enables the synthesis of multifunctionalized heterocyclic derivatives with three contiguous stereocenters
已经开发出有效的,高度区域选择性和立体选择性的[4 + 2]环加成反应以生成四氢吡喃并吡唑骨架。为此,已经使用了依赖于二萘基脯氨醇型氨基催化剂的羟基的H键导向作用的基于二烯胺的催化策略。这使得能够以良好的产率和优异的对映选择性合成具有三个连续的立体中心的多官能化杂环衍生物。