2-Aminobenzimidazole → HCID 20334086, compound

Participants

Reaction Steps

A solution was prepared containing 5.32 g. of 2-aminobenzimidazole in 150 ml. of tetrahydrofuran (THF). A second solution containing 6.76 g. of naphthyl isocyanate in 100 ml. of THF was added with stirring over a 30 minute period. The reaction mixture was heated at refluxing temperature for 6 hours and then cooled N-(2-benzimidazolyl)-N'-naphthylurea precipitated and was separated by filtration. Recrystallization of the filter cake from acetone yielded purified N-(2-benzimidazolyl)-N'-naphthylurea melting at 327°-328° C.

Provenance & Evidence