Water → Ethyl 3-isothiocyanatopyrrolidine-1-carboxylate

Participants

Reaction Steps

a-4) A mixture of 8.6 parts of sodium hydroxide and 120 parts of water was stirred at a temperature below 10° C. and there were added successively 17 parts of carbon disulfide and 35 parts of ethyl 3-amino-1-pyrrolidinecarboxylate. Stirring was continued for 3 hours. Then there were added dropwise 23.5 parts of ethyl carbonochloridate. Upon completion, stirring was continued for 2 hours at 60° C. The reaction mixture was extracted with methylbenzene. The extract was dried, filtered and evaporated, yielding 55 parts (100%) of ethyl 3-isothiocyanato-1-pyrrolidinecarboxylate as a residue (interm. 6).

Provenance & Evidence