N-bromobutanimide → HCID 18923362, compound

Participants

Reaction Steps

A mixture of 4,6-dichloro-3,5-dimethyl-2-benzothiazolinone (1.30 g), N-bromosuccinimide (1.03 g), 2,2'-azobis-(2,4-dimethyl-4-methoxyvaleronitrile) (65 mg) and dichloromethane (26 ml) was heated under reflux for 2 hours. N-Bromosuccinimide (500 mg) was added therein and the mixture was heated under reflux for additional 4 hours. The reaction mixture was washed with water twice and brine, dried over magnesium sulfate and evaporated in vacuo. The residue was crystallized from diethyl ether to give 5-bromomethyl-4,6-dichloro-3-methyl-2-benzothiazolinone (1.20 g) as crystals.

Provenance & Evidence