Indolyne Experimental and Computational Studies: Synthetic Applications and Origins of Selectivities of Nucleophilic Additions
作者:G-Yoon J. Im、Sarah M. Bronner、Adam E. Goetz、Robert S. Paton、Paul H.-Y. Cheong、K. N. Houk、Neil K. Garg
DOI:10.1021/ja1086485
日期:2010.12.22
conditions, trapped by a variety of nucleophilic reagents, and used to access a number of novel substituted indoles. Nucleophilic addition reactions to indolynes proceed with varying degrees of regioselectivity; distortion energies control regioselectivity and provide a simple model to predict the regioselectivity in the nucleophilic additions to indolynes and other unsymmetrical arynes. This model
4,5-、5,6- 和 6,7-吲哚炔前体的有效合成从商业上可获得的羟基吲哚衍生物开始已有报道。合成路线是通用的,并允许获得在吡咯环上保持未取代的吲哚炔前体。Indolynes 可以在温和的氟化物介导的条件下生成,被各种亲核试剂捕获,并用于获取许多新型取代的吲哚。吲哚的亲核加成反应具有不同程度的区域选择性;畸变能控制区域选择性,并提供一个简单的模型来预测吲哚和其他不对称芳烃的亲核加成中的区域选择性。该模型导致设计出具有增强的亲核区域选择性的取代 4,5-吲哚炔。