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Synthesis and photochemical properties of trans-2-(2-aryl- or heteroarylvinyl)-4,5-dichloropyridazin-3(2H)-ones

✍ Scribed by Heung-Seop Yim; Mi-Ra Kim; Gi-Hyeon Sung; Hyun-A Chung; Jin-Kook Lee; Sang-Gyeong Lee; Yong-Jin Yoon


Publisher
Journal of Heterocyclic Chemistry
Year
2008
Tongue
English
Weight
521 KB
Volume
45
Category
Article
ISSN
0022-152X

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✦ Synopsis


Abstract

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trans‐2‐(2‐Aryl‐ or heteroarylvinyl)‐4,5‐dichloropyridazin‐3(2__H__)‐ones 3 were synthesized from 4,5‐dichloropyridazin‐3(2__H__)‐one via 2 step. The photochemical behavior of 3 in THF, methylene chloride, acetonitrile and methanol is dependent on the kind of aryl or heterocyclic ring and the solvent polarity


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Arenesulfonylheterocycles (I): Synthesis
✍ Deok-Heon Kweon; Ho-Kyun Kim; Jeum-Jong Kim; Hyun A. Chung; Yong-Jin Yoon; Woo S 📂 Article 📅 2002 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 78 KB

## 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