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Arenesulfonylheterocycles (I): Synthesis and reactions of 2-benzenesulfonyl-4,5-dichloropyridazin-3-ones with amines

✍ Scribed by Deok-Heon Kweon; Ho-Kyun Kim; Jeum-Jong Kim; Hyun A. Chung; Yong-Jin Yoon; Woo Song Lee; Sung-Kyu Kim

Publisher
Journal of Heterocyclic Chemistry
Year
2002
Tongue
English
Weight
78 KB
Volume
39
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

The direct sulfonylation of 4,5‐dichloropyridazin‐3‐ones with some benzenesulfonyl chlorides in the presence of base in tetrahydrofuran gave only the corresponding N‐sulfonylated product. The reaction of 2‐benzenesulfonyl‐4,5‐dichloropyridazin‐3‐ones with some aliphatic amines under neutral conditions afforded 5‐alkylamino‐2‐benzenesulfonyl‐4‐chloropyridazin‐3‐ones and/or the corresponding N‐alkyl‐benzenesulfonamides.

📜 SIMILAR VOLUMES

ChemInform Abstract: Arenesulfonylhetero
ChemInform Abstract: Arenesulfonylheterocycles. Part 1. Synthesis and Reactions of 2-Benzenesulfonyl-4,5-dichloropyridazin-3-ones with Amines.
✍ Deok-Heon Kweon; Ho-Kyun Kim; Jeum-Jong Kim; Hyun A. Chung; Woo Song Lee; Sung-K 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 30 KB 👁 2 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

Reactions of 1,2,4-triazin-5(2H)-ones wi
Reactions of 1,2,4-triazin-5(2H)-ones with phenols and aromatic amines
✍ Oleg N. Chupakhin; Vladimir L. Rusinov; Dmitri G. Beresnev; H. Neunhoeffer 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 359 KB 👁 1 views

## Abstract 1,2,4‐Triazin‐5(2__H__)‐ones 1 react as well with phenols, resorinol and its dimethyl ethers, as with dimethyland diethylaniline, yielding 6‐aryl‐1,6‐didydro‐1,2,4‐triazin‐5(2__H__)‐ones 2, 4–8, 12–15. Oxidation of the 1,6‐dihydroadducts 2a,b gives the corresponding 3‐aryl‐6‐hydroxyphen