## Abstract 3‐Chloro‐ and 3‐bromo‐4‐methoxycoumarins 1a,b were readily transformed into 4‐halo‐5‐(2‐hydroxyphenyl)‐3‐oxo‐2,3‐dihydropyrazoles 2a,b with hydrazines. In the reaction of 1a,b with excess hydrazine and phenylhydrazine in boiling ethanol, unexpected 4‐hydrazono‐3‐(2‐hydroxyphenyl)‐2‐pyra
✦ LIBER ✦
Supramolecular organization of bis(3-halo-4-dimethylaminobenzylidene)hydrazines
✍ Scribed by Guieu, Samuel; Rocha, João; Silva, Artur M.S.
- Book ID
- 120044840
- Publisher
- Elsevier Science
- Year
- 2013
- Tongue
- English
- Weight
- 895 KB
- Volume
- 1035
- Category
- Article
- ISSN
- 0022-2860
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