Methanimidic acid, N-cyano-, ethyl ester → HCID 20069476, compound

Participants

Reaction Steps

2.7 g of N-cyanoimidoformic acid ethyl ester are added dropwise to a solution of 3.0 g of 4-amino-5,6-dihydro-5,5-dimethyl-4H-cyclopenta-[b]thiophene in 1.0 ml of ethanol. The exothermic reaction is complete after 2 hours. The reaction mixture is concentrated by evaporation. The crystalline residue is recrystallised from ether, yielding 2.2 g of N-cyano-N'-(5,6-dihydro-5,5-dimethyl-4H-cyclopenta[b]thiophen-4-yl)-formamidine having a melting point of 118°-119° C.

Provenance & Evidence