Imolamine (INN, BAN; brand names Angolon, Angoril, Circuline, Irri-Cor, Irrigor, Coremax) is a coronary vasodilator which is used in the treatment of angina pectoris and as a local anesthetic.
Use patents:Anne Rolland, (1986 to Laboratoires Albert Rolland SA).Anne Rolland, (1986 to Laboratoires Albert Rolland SA).
Synthesis Butalamine has very similar synthesis but is alkylated on the alternate nitrogen position.
The reaction of benzoylchloride oxime [698-16-8] (2) with Cyanamide (3) gives 3-Phenyl-1,2,4-oxadiazol-5-amine [3663-37-4] (4). Alkylation with 2-chlorotriethylamine [100-35-6] (5) in the presence of KOH base occurs at the endocyclic ring nitrogen completing the synthesis of imolamine (6).
EFforts towards Onepot method (section 2.5 & 2.6).
References