p-Toluenesulfonic acid → HCID 20367267, compound

Participants

Reaction Steps

32 g of p-isopropylbenzylhydrazine were added, under nitrogen, to a solution of 31.8 g of β-amino-β-ethoxyacrylic acid ethyl ester and 1 g of p-toluenesulphonic acid in 150 ml of ethanol. After stirring for a further two hours, the mixture was left to stand overnight. The compound identified above, which separated out as a precipitate, was filtered off and recrystallised from ethanol. Melting point: 105°, 18.3 g (40%).

Provenance & Evidence