The present invention relates to a process for the synthesis of 2-aminobiphenylene and derivatives thereof by reacting a benzene diazonium salt with an aniline compound under basic reaction conditions.
本发明涉及一种通过在碱性反应条件下将苯重氮盐与苯胺化合物反应合成2-氨基联苯及其衍生物的方法。
Radical Arylation of Anilines and Pyrroles via Aryldiazotates
作者:Josefa Hofmann、Eva Gans、Timothy Clark、Markus R. Heinrich
DOI:10.1002/chem.201701429
日期:2017.7.18
The radical arylation of anilines and pyrroles can be achieved under transition-metal- and catalyst-free conditions by using aryldiazotates in strongly alkaline aqueous solutions. The aryldiazotates act as protected diazonium ions, which do not undergo azo coupling with electron-rich aromatic substrates, but can still serve as an aryl radical source at slightly elevated temperatures. Based on an improved
Air-promoted direct radical arylation of anilines with arylhydrazines
作者:Tao Jiang、Sheng-Yan Chen、Huan Zhuang、Run-Sheng Zeng、Jian-Ping Zou
DOI:10.1016/j.tetlet.2014.06.099
日期:2014.8
Air-promoted coupling reaction of arylhydrazines and arylamines is developed for the selective synthesis of 2-aminobiaryls. This protocol provides a green, cost-effective, and scale-up method for preparation of 2-aminobiaryls.
The Gomberg-Bachmann Reaction for the Arylation of Anilines with Aryl Diazotates
作者:Gerald Pratsch、Tina Wallaschkowski、Markus R. Heinrich
DOI:10.1002/chem.201200430
日期:2012.9.10
Simply aqueous sodium hydroxide is sufficient to exclude ionic side reactions and to prepare 2‐aminobiphenyls from aryldiazotates and anilines through a new variant of the Gomberg–Bachmannreaction (see scheme). The metal‐free reaction under basic conditions allows to exploit the highly radical‐stabilizing effect of the aniline's free amino function for the first time, which leads to a so far unreached
The present invention comprises a compound for the prevention and/or treatment of cardiovascular diseases, nephropathy, fibrosis, primary aldosteronism or edema. The compound is of the following general formula (I): wherein R
1
represents a C1-C3 alkyl group; R
2
represents a hydroxy-C1-C4 alkyl group and the like; R
3
represents a halogeno group, a halogeno-C1-C3 alkyl group and the like; R
4
represents a hydrogen atom, a halogeno group and the like, —R
5
represents a sulfamoyl group or a C1-C3 alkylsulfonyl group; R
6
represents a hydrogen atom, a halogeno group and the like] or an N-oxide, atropisomer of the foregoing, or pharmaceutically acceptable salt of the foregoing.