Toluene → HCID 14518413, compound

Participants

Reaction Steps

(a-4) To a stirred and cooled (ice-bath) solution of 103.9 parts of sodium dihydro-bis(2-methoxyethoxy)aluminate in 45 parts of methylbenzene was added dropwise a solution of 88.5 parts of methyl 2-phenyl-1-propyl-1H-benzimidazole-5-carboxylate in 270 parts of methylbenzene. Upon completion, stirring was continued for 1 hour at room temperature. The reaction mixture was decomposed by the addition of a mixture of 200 parts of a sodium hydroxide solution 7.5 N and 200 parts of water. The methylbenzene-phase was separated, dried, filtered and evaporated. The residue was washed with 210 parts of 2,2'-oxybispropane. The product was filtered off and dried, yielding 73 parts (91%) of 2-phenyl-1-propyl-1H-benzimidazole-5-methanol; mp. 112.9° C. (int. 60).

Provenance & Evidence