Water → HCID 20279330, compound

Participants

Reaction Conditions

Reaction Steps

Sulphuryl chloride (2.74 g.) was added to a stirred suspension of 1'-(3,4-dichlorobenzyl)-spiro[pyrrolidine-3,3'-indoline]-2,2',5-trione (3.0 g.) in acetic acid (50 ml.). The mixture was stirred at 60° C. for 5 hours, cooled to ambient temperature and then stirred at this temperature for 16 hours. The mixture was then poured into water (250 ml.). The white solid which formed was collected by filtration, washed with water, air dried and recrystallised from 2-propanol to give 5'-chloro-1'-(3,4-dichlorobenzyl)-spiro[pyrrolidine-3,3'-indoline]-2,2',5-trione (1.9 g.), m.p. 268°-270° C.

Provenance & Evidence