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Cycloaddition reactions of 3,4-dihydro-2H-pyrrole 1-oxide with α,β-unsaturated lactones

✍ Scribed by David Alonso-Perarnau; Pedro de March; Marta Figueredo; Josep Font; Angeles Soria

Publisher
Elsevier Science
Year
1993
Tongue
French
Weight
639 KB
Volume
49
Category
Article
ISSN
0040-4020

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Cycloadditions of 3,4-dihydro-2H-pyrrole
Cycloadditions of 3,4-dihydro-2H-pyrrole 1-oxide to methylene-γ-butyrolactones
✍ David Alonso-Perarnau; Pedro de March; Mustafa el Arrad; Marta Figueredo; Josep 📂 Article 📅 1997 🏛 Elsevier Science 🌐 French ⚖ 579 KB

In the reactions of nitrone 1 with several methylene-y-butyrolactones 2-5 we have isolated and identified in all the cases the corresponding [3+21 cycloadducts. In all the adducts the oxygen atom of the dipole has linked to the more substituted carbon atom of the exocyclic double bond of the lactone