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Chemoselective Synthesis of Benzimidazoles with Silica-Supported Thionyl Chloride.

โœ Scribed by Abdelkrim Ben Alloum; Khalid Bougrin; Mohamed Soufiaoui

Publisher
John Wiley and Sons
Year
2003
Weight
77 KB
Volume
34
Category
Article
ISSN
0931-7597

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Synthesis of hindered hydrazones and the
Synthesis of hindered hydrazones and their reaction with thionyl chloride
โœ Mohamed I. Hegab; Nasser A. Hassan; Emad M. El-Telbani; Ibrahim S. Ahmed Farag; ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 133 KB ๐Ÿ‘ 1 views

## Abstract Hydrazones **__12aโ€“c__** and ketazines **__13aโ€“c__** were prepared by the reaction of ketones **__11aโ€“c__** with hydrazine hydrate depending on the temperature and the reaction time. Some ketone (aryl)hydrazone derivatives **__14a,c,e__** reacted with thionyl chloride to afford the chlo