Regioselective Synthesis of 2-Substituted Indoles from Benzotriazoles and Alkynes by Photoinitiated Denitrogenation
作者:Michael Teders、Lena Pitzer、Stefan Buss、Frank Glorius
DOI:10.1021/acscatal.7b01025
日期:2017.6.2
Herein, we describe a photoinitiated and regioselective synthesis of 2-substituted indoles under mild reaction conditions. This biologically privileged scaffold was accessed in good yields from N-aroylbenzotriazoles, a quencher class previously identified using our mechanism-based luminescence screening, and terminal alkynes in the presence of a photocatalyst and blue light irradiation. This straightforward
在本文中,我们描述了在温和的反应条件下光引发和区域选择性合成2-取代的吲哚。可从N-芳酰基苯并三唑(一种以前使用我们的基于机理的发光筛查方法鉴定的猝灭剂)和末端炔烃(在光催化剂和蓝光照射下)的高收率下获得这种生物学特权的支架。这种简单的协议显示了广泛的底物范围和官能团耐受性。此外,通过基于添加剂的稳健性筛选,评估了反应的温和性和稳健性。反应量子产率的确定和斯特恩-沃尔默研究支持所提出的光引发自由基链机理。