Studies on the action of sodium-ethylenediamine on α-diketo compounds

Pranab Ghosh and Prasanta Chak

Abstract

Reactions of sodium / ethylenediamine (Na / EDA) have been carried out on α-diketones e.g. benzil (1), 4, 4 ⁄-dibromo benzil (2) and on diketo triterpenoids e.g. 2, 3 diketo lupene (3) and 2, 3 diketo methyl dihydro betulonate (4). The resulting 1, 4 pyrazine derivatives have been characterized by UV, IR, NMR (1H and 13C), optical rotation, mass spectra and by comparison with authentic samples.