Chlorosuccinimide → 2-n-butyl 4-chloro 1-(2-chlorophenyl)methyl-5-hydroxymethyl-1H-imidazole

Participants

Reaction Conditions

Reaction Steps

A solution of 2-n-butyl-1-(2-chlorophenyl)methyl-5-hydroxymethyl-1H-imidazole (Example 3(i) Method A) (10.2 g. 0.0368 mol) in tetrahydrofuran (100 ml) was treated portionwise with N-chlorosuccinimide (NCS) (4.92 g, 0.0368 mol) and stirred at 45° C. for a total of 3 hours after the addition of the NCS. The tetrahydrofuran was evaporated and the residue was partitioned between water and ethyl acetate. The organic extracts were washed with water, dried and concentrated to the residual product that crystallized when stirred with ether to yield 5.1 g (44%) of 2-n-butyl 4-chloro 1-(2-chlorophenyl)methyl-5-hydroxymethyl-1H-imidazole; mp 134°-135° C. (from acetonitrile).

Provenance & Evidence