m-Chloroperbenzoic acid → HCID 178502045, compound

Participants

Reaction Steps

To a solution of 7.2 g (0.2 mole) of [5-[[(2,2-dichloro-1-methylcyclopropyl)methyl]thio]-1H-benzimidazol-2-yl]carbamic acid, methyl ester in 120 ml of CHCl3 and 120 ml of acetic acid at -15° C there is added 4.2 g (0.02 mole) of 85% m-chloroperoxybenzoic acid and 40 ml of CHCl3 and with stirring is allowed to warm to room temperature. The mixture is stirred for an additional 2 hours. The CHCl3 is removed in vacuo and the remaining solution is neutralized with aqueous NaHCO3. The resulting solid is filtered off, dried, and crystallized from acetonitrile to yield 3.4 g of the title compound, m.p. 231-233° C.

Provenance & Evidence