Chlorosulfonic acid → HCID 54595979, compound

Participants

Reaction Conditions

Reaction Steps

Chlorosulphonic acid (30 mL) is taken, cooled to 0° C. cooled and combined with 8 g of 6-bromoindolinone with vigorous stirring. The ice bath is removed and the mixture is stirred for a further 16 h at RT. The reaction mixture is slowly poured onto ice with vigorous stirring, the precipitate formed is filtered off and dried in the vacuum dryer. 6-Bromindolinone-5-sulphonyl chloride is obtained as crude product, which is further used directly.

Provenance & Evidence