Phosphorylated enaminones can be obtained by the reaction of enaminone dianions with diphenylphosphinoyl chloride. In most cases, the reaction gave a mixture of monosubstituted and disubstituted compounds. Disubstituted compounds show an interesting NMR spectrum. In fact, the methine proton appears as a broad signal whose chemical shift varies with concentration. The chemistry of the α′-derivatives partially parallels that of the corresponding silicon derivatives in reaction with aldehydes.
Dianions of acyclic β-enamino ketones and electrophiles. 9. Synthesis and reactivity of phosphorylated enaminones
De Nino A.;Procopio A.;Tagarelli A.;
2000-01-01
Abstract
Phosphorylated enaminones can be obtained by the reaction of enaminone dianions with diphenylphosphinoyl chloride. In most cases, the reaction gave a mixture of monosubstituted and disubstituted compounds. Disubstituted compounds show an interesting NMR spectrum. In fact, the methine proton appears as a broad signal whose chemical shift varies with concentration. The chemistry of the α′-derivatives partially parallels that of the corresponding silicon derivatives in reaction with aldehydes.File in questo prodotto:
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