| Literature DB >> 12948193 |
Christophe Roussel1, Rachid Fihi, Kabula Ciamala, Joël Vebrel, Touria Zair, Claude Riche.
Abstract
Cycloaddition of nitrones 1 with methylene-gamma-butyrolactones 2, 3 and 4 afforded spiroadducts 5, 6 and 7 with high selectivity. Mixtures of diastereoisomers were usually obtained, whose structures were established by 1H and 13C NMR spectroscopies or X-ray crystallography. Treatment of spiroadducts in acidic and alkaline media led to different, unexpected and novel rearrangements.Entities:
Year: 2003 PMID： 12948193 DOI： 10.1039/b300628j
Source DB: PubMed Journal: Org Biomol Chem ISSN： 1477-0520 Impact factor: 3.876