An efficient ultrasonic-assisted synthesis of imidazolium and pyridinium salts based on the Zincke reaction
作者:Sanhu Zhao、Xiaoming Xu、Lu Zheng、Hai Liu
DOI:10.1016/j.ultsonch.2009.12.019
日期:2010.4
irradiation for the synthesis of imidazolium and pyridinium salts based on the Zinckereaction. Tertiary nitrogen nucleophiles such as pyridines and imidazoles can be alkylated with primary amine by simply using their ammonium form Zincke salts. In almost all cases, a clear yield increase results and a dramatic reduction of the reaction time accompanied by an improved quality of the products occurs.
engaged in Zinckereactions. Efficient transformations were obtained, even when conducted on electronically deactivated, eventually also sterically hindered, substrates. This was achieved by the combined use of microwave activation and aqueous solvents. Under our conditions, the role of water revealed indeed crucial to avoid the self-degradation of the Zincke salt, the reagent of the reaction.
CHEMICAL MODEL OF A NEURODEGENERATIVE DISEASE, METHOD FOR PREPARATION AND USES OF SAME
申请人:CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
公开号:US20150328338A1
公开(公告)日:2015-11-19
The invention concerns the use of pyridinium furosemide or one of the derivatives, analogues, salts, metabolites, or prodrugs thereof in the preparation of a chemical model of a neurodegenerative disease, preferably Parkinson's disease. The invention also concerns the corresponding chemical model and the uses of same, in particular in screening tests for identifying drug candidates.