A novel and convenient route for the construction of 5-((1H-1,2,4-triazol-1-yl)methyl)-1H-indoles and its application in the synthesis of Rizatriptan
摘要:
In this study, a novel and convenient route for the construction of 5-((1H-1,2,4-triazol-1-yl)methyl)-1H-indoles (8) is presented starting from (1H-1,2,4-triazol-1-yl)methanol (5) and indolines (6) under 98% H2SO4 at room temperature for 4-24 h, followed by deacetylation and dehydrogenation. Based on this finding, a novel route to synthesize Rizatriptan starting from tryptamine was designed and accomplished with 48.5% overall yield in 6 steps. Compared with operational art, the new route afforded higher yield and more pure products requiring no chromatographic purification, which may further be applied in industrialization. (C) 2014 Elsevier Ltd. All rights reserved.
Translating Planar Heterocycles into Three‐Dimensional Analogs by Photoinduced Hydrocarboxylation**
作者:Myriam Mikhael、Sara N. Alektiar、Charles S. Yeung、Zachary K. Wickens
DOI:10.1002/anie.202303264
日期:2023.7.24
We report a new strategy that translates indoles and related heterocycles into diverse 3D analogs by dearomative hydrocarboxylation. The transformation is highly chemoselective, broad in scope, operationally simple, and readily amenable to high-throughput experimentation (HTE).
我们报告了一种新策略,通过脱芳烃加氢羧化将吲哚和相关杂环化合物转化为多种 3D 类似物。该转化具有高度化学选择性、范围广泛、操作简单且易于进行高通量实验(HTE)。