Propylenediamine → 5,6-Bis(4-fluorophenyl)-2-methyl-2,3-dihydropyrazine

Beteiligte Stoffe

Reaktionsschritte

First, with ethanol as a solvent, 5.31 g of 4,4′-difluorobenzil (by Tokyo Chemical Industry Co., Ltd.) and 1.60 g of 1,2-diaminopropane (by Tokyo Chemical Industry Co., Ltd.) were mixed, and the mixture was refluxed for three hours. After reaction, a reaction solution was condensed by using an evaporator, and an obtained residue was recrystallized by using ethanol; thus, 2,3-bis(4-fluorophenyl)-5-methyl-5,6-dihydropyrazine was obtained (light yellow powder, yield: 86%).

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