Water → HCID 20310106, compound

Participants

Reaction Steps

To 500 g. of polyphosphoric acid is added 22.4 g. of ethyl 1-cyano-1,2,3,4-tetrahydro-5-naphthoate and the mixture is stirred at 90°-100° C. for 2 hours. Then, 1 l. of water is added, followed by cooling. The resultant crystals are collected by filtration, washed with water and recrystallized from ethanol. The procedure gives ethyl 1-carbamoyl-1,2,3,4-tetrahydro-5-naphthoate, melting point: 159.5°-161.5° C.

Provenance & Evidence