作者:Dmitry I. Bugaenko、Anastasia A. Dubrovina、Marina A. Yurovskaya、Alexander V. Karchava
DOI:10.1021/acs.orglett.8b02784
日期:2018.12.7
A new protocol for the preparation of N-substituted indole-3-carboxylates has been developed. The key C–N bond formation occurs under transition-metal-free conditions employing a t-BuOK/DMF system without special initiators or additives. Across a number of substrates, indoles were afforded in yields higher or comparable to those obtained under transition-metal-catalyzed conditions. While demonstrating
已经开发了用于制备N-取代的吲哚-3-羧酸酯的新方案。在没有过渡金属的条件下,采用t -BuOK / DMF系统且无特殊引发剂或添加剂的情况下,关键的C–N键形成。在许多底物上,吲哚的产率与过渡金属催化条件下的产率相比更高或相当。在表现出高官能团耐受性的同时,新条件对于制造使用其他基于金属的催化方法无法制成纯净形式的卤代吲哚特别有吸引力。