A compound for use in the treatment of a disease ameliorated by the inhibition of Notum of formula (I): (I)
一种用于治疗通过抑制公式(I)中的Notum改善的疾病的化合物:(I)
Humic acid as an efficient and reusable catalyst for one pot three-component green synthesis of 5-substituted 1<i>H</i>-tetrazoles in water
作者:Hongshe Wang、Yichun Wang、Yinfeng Han、Weixing Zhao、Xiaomei Wang
DOI:10.1039/c9ra08523h
日期:——
weight polymer. A simple and facile one pot three-componentsynthesis of 5-substituted 1H-tetrazoles from aldehydes, hydroxyamine hydrochloride and sodium azide using humic acid as an efficient catalyst in water is described. The method reported has several advantages such as high to excellent yields, easy work-up, mild reaction conditions, use of water as a green solvent, and a commercially available,
Cationic organotin cluster [
<i>t</i>
‐Bu
<sub>2</sub>
Sn(OH)(H
<sub>2</sub>
O)]
<sub>2</sub>
<sup>2+</sup>
2OTf
<sup>−</sup>
‐catalyzed one‐pot three‐component syntheses of 5‐substituted 1
<i>H</i>
‐tetrazoles and 2,4,6‐triarylpyridines in water
作者:Hongshe Wang、Weixing Zhao、Juan Du、Fenyan Wei、Qi Chen、Xiaomei Wang
DOI:10.1002/aoc.5132
日期:2019.10
The cationicorganotincluster [t‐Bu2Sn(OH)(H2O)]22+2OTf− is easy to prepare and stable in air. The catalytic activity of [t‐Bu2Sn(OH)(H2O)]22+2OTf− as a neutralorganotin Lewis acid catalyst is probed through the one‐pot three‐component syntheses of 5‐substituted 1H‐tetrazoles from aldehydes, hydroxylamine hydrochloride and sodium azide, and of 2,4,6‐triarylpyridines from aromatic aldehydes, substituted