An article Lithium Chloride Catalyzed Aza-Michael Addition of Pyrazoles to alpha,beta-Unsaturated Imides WOS:000477973200011 published article about ENANTIOSELECTIVE CONJUGATE ADDITION; BASIC IONIC LIQUID; BETA-AMINO ACIDS; N-HETEROCYCLES; ASYMMETRIC-SYNTHESIS; AMMONIA EQUIVALENTS; 2,4-DISUBSTITUTED 1,2,3-TRIAZOLES; NITROGEN-HETEROCYCLES; AROMATIC-AMINES; DERIVATIVES in [Zhou, Hongyan; Zhang, Zhixia] Gansu Agr Univ, Coll Sci, Lanzhou 730070, Peoples R China; [Zhou, Hongyan; Xiang, Xiancheng; Ma, Ben; Wang, Ganggang; Yang, Jingya] Northwest Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Peoples R China in 2019.0, Cited 96.0. Safety of 3,5-Dimethyl-1H-pyrazole. The Name is 3,5-Dimethyl-1H-pyrazole. Through research, I have a further understanding and discovery of 67-51-6
A lithium chloride catalyzed aza-Michael reaction of pyrazoles to alpha,beta-unsaturated imides has been developed. A range of aromatic and aliphatic alpha,beta-unsaturated imides are found to be suitable for the established method, providing the corresponding aza-Michael adducts in up to 93% yields. The inexpensive catalyst, good substrate tolerance, and ease of scale-up make this procedure highly practical.
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Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics