2 2 And 4 2 Cycloadditions Reactions Diels Alder Reactions
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1. Niobium Pentachloride as Lewis acid in [2 + 2] and [4 + 2] cycloadditions reactions / Pentacloreto de nióbio como ácido de Lewis em reações de cicloadição [2+2] e [4+2]
The aim of this work was to investigate the use of NbCl5 as Lewis acid in cycloadittion reactions. We have studied [2 + 2] cycloaddition reactions, Diels-Alder reactions between enonas and cyclopentadiene and aza-Diels-Alder reactions with Schiff bases. The effects of the temperature and of the molar concentration of NbCl5 were also evaluated. Comparasion of
Publicado em: 2006