On February 10, 2010, Janin, Yves; Guillou, Sandrine published a patent.Application In Synthesis of 5-Methoxy-1H-pyrazole The title of the patent was Preparation of alkoxypyrazoles. And the patent contained the following:
The present invention relates to a process for the preparation of alkoxypyrazoles and new alkoxypyrazole compounds The invention relates to a process for the preparation of alkoxypyrazoles I and their isomers, wherein R1 is (un)substituted alkyl, alkenyl, or alkynyl, etc.; R2 is H, halo, substituted alkyl, alkenyl, or alkynyl; R3 is H, halo, (un)substituted alkyl, or aryl, etc.; R4 is H, (un)substituted alkyl, aryl, or heteroaryl, etc. For instance, heterocyclization of diethylethoxymethylenemalonate with NH2NH2 gave Et 3-ethoxy-1H-pyrazole-4-carboxylate (41%) and 2,3-dihydro-3-oxo-1H-pyrazole-4-carboxylic acid Et ester (37%). The experimental process involved the reaction of 5-Methoxy-1H-pyrazole(cas: 215610-30-3).Application In Synthesis of 5-Methoxy-1H-pyrazole
The Article related to alkoxypyrazole preparation, Heterocyclic Compounds (More Than One Hetero Atom): Pyrazoles and other aspects.Application In Synthesis of 5-Methoxy-1H-pyrazole
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics