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ChemInform Abstract: Synthesis of 3-Acyl-4-aryl-2-pyrazolines by the Reaction of α,. beta.-Unsaturated Ketones with Diazomethane.

✍ Scribed by A. LEVAI; Z. CZIAKY; J. JEKO; Z. SZABO


Book ID
112042039
Publisher
John Wiley and Sons
Year
2010
Weight
32 KB
Volume
27
Category
Article
ISSN
0931-7597

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Synthesis of spiro-1-pyrazolines by the
✍ Artur M. S. Silva; José A. S. Cavaleiro; Albert Lévai; Tamás Patonay 📂 Article 📅 1999 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 641 KB

## Abstract 1,3‐Dipolar cycloadditions of exocyclic α,β‐unsaturated ketones 1‐22 with diazomethane afforded spiro‐1‐pyrazolines 23‐44 in a diastereospecific reaction. The structure and stereochemistry of each compound synthesised has been elucidated by nmr spectroscopic measurements and other analy