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Description for route of synthesis:
Under inert gas protection, using ether as the solvent, bromocyclopropane is first reacted with tert butyl lithium at low temperature to generate cyclopropyl lithium intermediate; Subsequently, sulfonyl chloride was added to the system and the reaction temperature was controlled for nucleophilic substitution reaction; After the reaction is complete, the target product cyclopropanesulfonyl chloride is purified by vacuum distillation after quenching, extraction, washing, and drying.
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