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Reactivity of p-phenyl substituted β-enamino compounds using k-10/ultrasound. I. synthesis of pyrazoles and pyrazolinones

✍ Scribed by Claudete J. Valduga; Hugo S. Braibante; Mara E. F. Braibante


Publisher
Journal of Heterocyclic Chemistry
Year
1998
Tongue
English
Weight
316 KB
Volume
35
Category
Article
ISSN
0022-152X

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Reactivity of p-phenyl substituted β-ena
✍ Claudete J. Valduga; Hugo S. Braibante; Mara E. F. Braibante 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 323 KB

## Abstract The reactivity of the β‐enamino ketones, 3‐amino‐1‐(__p__‐phenyl‐substituted)‐2‐buten‐1‐ones 1a‐d and β‐enamino esters, ethyl 3‐amino‐3‐(__p__‐phenyl‐substituted)‐2‐propenoates 5a‐d was systematically studied when allowed to react with hydrazine and methylhydrazine under solid support K

ChemInform Abstract: Reactivity of p-Phe
✍ C. J. VALDUGA; H. S. BRAIBANTE; M. E. F. BRAIBANTE 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 37 KB 👁 1 views

Reactivity of p-Phenyl Substituted β-Enamino Compounds Using K-10/Ultrasound. Part 1. Synthesis of Pyrazoles and Pyrazolinones. -In order to examine the reactivity of the electrophilic center in the β-enamino ketones (I) and esters (VI) these compounds are reacted with hydrazine and methylhydrazine

ChemInform Abstract: Reactivity of p-Phe
✍ C. J. VALDUGA; H. S. BRAIBANTE; M. E. F. BRAIBANTE 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 34 KB 👁 1 views

Reactivity of p-Phenyl Substituted β-Enamino Compounds Using K-10/Ultrasound. Part 1. Synthesis of Pyrazoles and Pyrazolinones. -In the reaction with unsubstituted hydrazine it is not clarified which of the both forms (II) or (III) is obtained. -(VALDUGA, C.

Reactivity of p-phenyl substituted β-Ena
✍ Claudete J. Valduga; Denise B. Santis; Hugo S. Braibante; Mara E. F. Braibante 📂 Article 📅 1999 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 215 KB

## Abstract The condensation of 4‐phenyl substituted β‐enamino ketones 1a‐d and β‐enamino esters 5a‐d with hydroxylamine hydrochloride using K‐10 as the solid support under sonication was studied to evaluate the formation of isoxazole and 5‐isoxazolone rings from β‐enamino compounds with a substitu