Methylene blue as an additive for acid-acid-catalyzed tandem reactions targeting on the synthesis of nitrogen-containing heterocycles
作者:Fan Huang、Luxia Guo、Shaomin Chen、Saeede Saki、Mona Hosseini-Sarvari、Minghao Li、Ruifeng Wang、Rongxian Bai、Yanlong Gu
DOI:10.1016/j.mcat.2023.113293
日期:2023.8
establishment of some acid-acid-catalyzed tandem reactions. Addition of MB to acid-catalyzed reaction system not only allowed the use of some basic amines as substrates, which are generally incompatible with the acid conditions, but also enabled the successful synthesis of many important nitrogen-containing heterocycles, such as β-carbolines, pyridines, and quinazolines, in a straightforward manner.
亚甲基蓝(MB)被证明是一种有效且与胺相容的添加剂,有助于建立一些酸-酸催化的串联反应。在酸催化反应体系中添加MB不仅可以使用一些通常与酸性条件不相容的碱性胺作为底物,而且可以成功合成许多重要的含氮杂环化合物,例如β-咔啉、吡啶和喹唑啉,以简单的方式。