abstract |
A process for preparing 2,2-difluoro-1,3-benzodioxole is provided that comprises a step of reacting 1,3-benzodioxole with chlorine in benzotrifluoride in the presence of a radical initiator. Additional processes are provided for preparing 2,2-dichloro-1,3-benzodioxole, which is used as an intermediate in preparation of 2,2-difluoro-1,3-benzodioxole. |