Synthesis of N-Arylindazoles and Benzimidazoles from a Common Intermediate
摘要:
A variety of N-aryl-1H-indazoles and benzimidazoles were synthesized from common arylamino oximes in good to excellent yields The product selectivity depends upon the base used in the reaction, as triethylamine promoted the formation of benzimidazoles, whereas 2-aminopyridine promoted the formation of N-arylindazoles This method is valuable to the synthetic community because both indazoles and benzimidazoles are prevalent in pharmaceuticals
DAST-promoted Beckmann rearrangement/intramolecular cyclization of acyclic ketoximes: access to 2-oxazolines, benzimidazoles and benzoxazoles
作者:Huiqin Li、Jian Qin、Zonglian Yang、Xiaoxue Guan、Lin Zhang、Peiqiu Liao、Xingqi Li
DOI:10.1039/c5cc02155c
日期:——
The first example of DAST-promoted Beckmann rearrangement/intramolecular cyclization of acyclic ketoximes is described, which affords 2-oxazolines, benzimidazoles and benzoxazoles.
Assembly of <i>N</i>,<i>N</i>-Disubstituted Hydrazines and 1-Aryl-1<i>H</i>-indazoles via Copper-Catalyzed Coupling Reactions
作者:Xiaodong Xiong、Yongwen Jiang、Dawei Ma
DOI:10.1021/ol300847v
日期:2012.5.18
CuI-catalyzed coupling of N-acyl-N′-substituted hydrazines with aryl iodides takes place at 60–90 °C to afford N-acyl-N′,N′-disubstituted hydrazines regioselectively and thereby gives a facile method for assembling N,N-diaryl hydrazines. N-Acyl-N′-substituted hydrazines can also react with 2-bromoarylcarbonylic compounds at 60–125 °C under the catalysis of CuI/4-hydroxy-l-proline to provide 1-aryl-1H-indazoles
A method is provided for synthesizing 1H-indazole compounds in which aromatic carbonyl compounds are reacted with a nitrogen source to form oximes which are then converted to 1H-indazoles.
提供了一种合成1H-吲唑化合物的方法,其中芳香酮化合物与氮源反应形成肟类,然后转化为1H-吲唑。
Novel Heterocyclic Substituted Carbonyl Derivatives and Their Use as Dopamine D3 Receptor Ligands
申请人:Hendrix James A.
公开号:US20090247509A1
公开(公告)日:2009-10-01
The invention relates to heterocyclic substituted carbonyl derivatives that display selective binding to dopamine D
3
receptors. In another aspect, the invention relates to a method for treating central nervous system disorders associated with the dopamine D
3
receptor activity in a patient in need of such treatment comprising administering to the subject a therapeutically effective amount of said compounds for alleviation of such disorder. The central nervous system disorders that may be treated with these compounds include Psychotic Disorders, Substance Dependence, Substance Abuse, Dyskinetic Disorders (e.g. Parkinson's Disease, Parkinsonism, Neuroleptic-Induced Tardive Dyskinesia, Gilles de la Tourette Syndrome and Huntington's Disease), Dementia, Anxiety Disorders, Sleep Disorders, Circadian Rhythm Disorders and Mood Disorders. The subject invention is also directed towards processes for the preparation of the compounds described herein as well as methods for making and using the compounds as imaging agents for dopamine D
3
receptors.
Novel heterocyclic substituted carbonyl derivatives and their use as dopamine D3 receptor ligands
申请人:Hendrix A. James
公开号:US20070161641A1
公开(公告)日:2007-07-12
The invention relates to heterocyclic substituted carbonyl derivatives that display selective binding to dopamine D
3
receptors. In another aspect, the invention relates is to a method for treating central nervous system disorders associated with the dopamine D
3
receptor activity in a patient in need of such treatment comprising administering to the subject a therapeutically effective amount of said compounds for alleviation of such disorder. The central nervous system disorders that may be treated with these compounds include Psychotic Disorders, Substance Dependence, Substance Abuse, Dyskinetic Disorders (e.g. Parkinson's Disease, Parkinsonism, Neuroleptic-Induced Tardive Dyskinesia, Gilles de la Tourette Syndrome and Huntington's Disease), Dementia, Anxiety Disorders, Sleep Disorders, Circadian Rhythm Disorders and Mood Disorders. The subject invention is also directed towards processes for the preparation of the compounds described herein as well as methods for making and using the compounds as imaging agents for dopamine D
3
receptors.