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Synthesis of planar chiral imidazo[1,5-a]pyridinium salts based on [2.2]paracyclophane for asymmetric β-borylation of enones

✍ Scribed by Bing Hong; Yudao Ma; Lei Zhao; Wenzeng Duan; Fuyan He; Chun Song


Book ID
113929498
Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
713 KB
Volume
22
Category
Article
ISSN
0957-4166

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Imidazo[1,5-a]pyridinium Salts from Phen
✍ Roland Bonneau; Philippe Guionneau 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 203 KB 👁 1 views

## Abstract 3‐Phenylimidazo[1,5‐__a__]pyridinium salts are easily prepared in excellent yield by thermolysis of phenylchlorodiazirine in the presence of 2‐pyridyl Schiff bases (2‐Pyr‐CH=NR, where R is an aromatic or alkyl group). When the reaction is conducted in an alkane solvent, the salts precip