Synthesis and Structural Identification of α-Acetylamino-β-4-(1, 2-dihydro-2-thioquinoline) Propionic Acid Ethyl Ester

The selective thionation of α-acetylamino-β-4(1,2-dihydro-2-oxoquinoline)propionic acid and its ester with phosphorus pentasulfide as a thionation reagent yielded the target compound α-acetylamino β-4(1,2-dihydro-2-thioquinoline)propionate. The structure of the new compound was studied by IR、UV、¹³C NMR、GC/MS and Element analysis,and substitutional site of thionation of acetylamine was discussed.