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ChemInform Abstract: An Efficient Stereoselective Synthesis of 3-Spirocyclopentene- and 3-Spiropyrazole-2-oxindoles via 1,3-Dipolar Cycloaddition Reaction.

✍ Scribed by Kodirajan Selvakumar; Vadivel Vaithiyanathan; Ponnusamy Shanmugam

Publisher
John Wiley and Sons
Year
2010
Weight
25 KB
Volume
41
Category
Article
ISSN
0931-7597

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✦ Synopsis

Abstract

Phosphorous and sulfur ylide chemistry is used to convert bromo isomerized (I) derivatives of Moritaβ€”Baylisβ€”Hillman adducts of isatin via [3 + 2] annulation reaction into title compounds (III), (V) and (VII).

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ChemInform Abstract: Efficient and Rapid
ChemInform Abstract: Efficient and Rapid Synthesis of Regioselective Functionalized Potassium 1,2,3-Triazoletrifluoroborates via 1,3-Dipolar Cycloaddition.
✍ Krishnavenu Bolla; Taejung Kim; Jung Ho Song; Seokjoon Lee; Jungyeob Ham πŸ“‚ Article πŸ“… 2011 πŸ› John Wiley and Sons βš– 44 KB

## Abstract The synthesis proceeds via a one‐pot dipolar cycloaddition of electron‐rich and electron‐deficient haloaryltrifluoroborates with various aromatic and aliphatic acetylenes and sodium azide.