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Synthesis of 3,3′-dimethyl-4,4′-diaminodiphenylmethane catalyzed by zeolites replacing mineral acids

✍ Scribed by Lin, Xiao; Zhao, Yingxian; Zhang, Shengjian; Wang, Lingyun; Wang, Yi; Guo, Yanna

Book ID
125434801
Publisher
Elsevier Science
Year
2014
Tongue
English
Weight
445 KB
Volume
45
Category
Article
ISSN
1566-7367

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## Abstract magnified image Reaction of 3,5‐dimethyl‐4‐isoxazolyl‐diazonium tetrafluoroborate (**2**) with two equivalents of potassium acetate and five mole percent of 18‐crown‐6 in ethanol‐free chloroform produce 3‐methyl‐4__H__‐pyrazolo[3,4‐__d__]isoxazole (**3**) in good to excellent yield. Py