6533b86efe1ef96bd12cbd6e

RESEARCH PRODUCT

Polycondensed nitrogen heterocycles. X. 5,6,7,8-Tetrahydropyrrolo[1,2-e][1,5]benzodiazocin-7-ones. A new ring system

Isabella D'asdiaAnna Maria AlmericoGaetano DattoloEnrico AielloGirolamo Cirrincione

subject

chemistry.chemical_compoundchemistryOrganic ChemistryCondensationOrganic chemistrychemistry.chemical_elementRing (chemistry)TolueneNitrogenCatalysisPalladium

description

The synthesis of a new heterocyclic ring system is described. Condensation of 1,4-diketones 1a,b with β-alanine gave the substituted propionic acids 2a,b which upon reduction with palladium on charcoal afforded compounds 3a,b. Title compounds 4a,b were obtained by refluxing 3a,b in toluene with p-toluenesulphonic acid as catalyst.

https://doi.org/10.1002/jhet.5570180618