Arene Cyanation via Cation-Radical Accelerated-Nucleophilic Aromatic Substitution
作者:Natalie Holmberg-Douglas、David A. Nicewicz
DOI:10.1021/acs.orglett.9b02678
日期:2019.9.6
Herein we describe a cation radical-accelerated-nucleophilic aromatic substitution (CRA-SNAr) of alkoxy arenes utilizing a highly oxidizing acridinium photoredox catalyst and acetone cyanohydrin, an inexpensive and commercially available cyanide source. This cyanation is selective for carbon-oxygen (C-O) bond functionalization and is applicable to a range of methoxyarenes and dimethoxyarenes. Furthermore
The invention relates to a process for producing a trifluotomethylbenzylamine represented by the following general formula (1),
1
where each R independently represents a halogen selected from the group consisting of fluorine, chlorine, bromine and iodine, an alkyl group having a carbon atom number of 1-4, an alkoxy group having a carbon atom number of 1-4, an amino group, a hydroxyl group or a trifluoromethyl group, and n represents an integer from 0 to 4. The process includes hydrogenating a trifluoromethylbenzonitrile by hydrogen in an organic solvent in the presence of ammonia and a catalyst containing a platinum group element. This trifluoromethylbenzonitrile is represented by the following general formula (2),
2
where R and n are defined as above. With this process, it is possible to obtain the trifluoromethylbenzylamine at an extremely high yield.
Pharmaceutical compositions comprising azapurinones useful in treating
申请人:May & Baker Limited
公开号:US03987160A1
公开(公告)日:1976-10-19
8-Azapurin-6-ones substituted in the 2-position by an unsubstituted or substituted phenyl or naphthyl group, or by an alkenyl or alkynyl group, a cycloalkyl group, an alkyl group contaning 2 to 10 carbon atoms, or an alkyl group containing 1 to 10 carbon atoms carrying one or more substitutents selected from halogen atoms and hydroxy, cycloalkyl, alkoxy, phenyl and substituted phenyl groups, and pharmaceutically acceptable salts thereof, possess pharmacological properties useful, for example, in the treatment of allergic bronchial asthma.
Guanidine Compounds, and Use Thereof as Binding partners for 5-Ht5 Receptors
申请人:Netz Astrid
公开号:US20070299074A1
公开(公告)日:2007-12-27
The present invention relates to guanidine compounds of the general formula I
corresponding enantiomeric, diastereomeric and/or tautomeric forms thereof as well as pharmaceutically acceptable salts thereof. The present compound further relates to the use of guanidine compounds as binding partners for 5-HT5 receptors for the treatment of diseases which are modulated by a 5-HT5 receptor activity, in particular for the treatment of neurodegenerative and neuropsychiatric disorders as well as the associated signs, symptoms and dysfunctions.
GUANIDINE COMPOUNDS, AND USE THEREOF AS BINDING PARTNERS FOR 5-HT5 RECEPTORS
申请人:Netz Astrid
公开号:US20110237589A1
公开(公告)日:2011-09-29
The present invention relates to guanidine compounds of the general formula I
corresponding enantiomeric, diastereomeric and/or tautomeric forms thereof as well as pharmaceutically acceptable salts thereof. The present compound further relates to the use of guanidine compounds as binding partners for 5-HT5 receptors for the treatment of diseases which are modulated by a 5-HT5 receptor activity, in particular for the treatment of neurodegenerative and neuropsychiatric disorders as well as the associated signs, symptoms and dysfunctions.