Alkoxypyrazoles and the process for their preparation
申请人:Institut Pasteur
公开号:EP2151434A1
公开(公告)日:2010-02-10
The present invention relates to a process for the preparation of alkoxypyrazoles and new alkoxypyrazole compounds.
本发明涉及一种制备烷氧基吡唑和新烷氧基吡唑化合物的方法。
[EN] NEW ALKOXYPYRAZOLES<br/>[FR] NOUVEAUX ALCOXYPYRAZOLES
申请人:PASTEUR INSTITUT
公开号:WO2010015656A2
公开(公告)日:2010-02-11
The present invention relates to a process for the preparation of alkoxypyrazoles and new alkoxypyrazole compounds.
5-Iodo-3-Ethoxypyrazoles: An Entry Point to New Chemical Entities
作者:Sandrine Guillou、Yves L. Janin
DOI:10.1002/chem.200903442
日期:2010.4.19
focused on the preparation of new pyrazole derivatives, has led us to report here an original and simplified preparation of ethyl 3‐ethoxy‐1H‐pyrazole‐4‐carboxylate. This is based on the reaction of hydrazine monohydrochloride and diethyl 2‐(ethoxymethylene)malonate. Further transformations of this key compound allowed the preparation of the two possible iodinated isomers, namely, 3‐ethoxy‐4‐iodo‐ and