Tetraethyl orthocarbonate → HCID 117601189, compound

Participants

Reaction Steps

2,3-diamino-5-(3,5-dimethylisoxazol-4-yl)-N-methoxy-N-methylbenzamide (25 g, 0.086 mol) was dissolved in a 1:1 mixture (32 mL total) of tetraethylorthocarbonate and AcOH and allowed to stir under air at room temperature for 1.5 hr. The reaction mixture was concentrated in vacuo at room temperature and the crude residue was dissolved in EtOAc. The solution was washed three times with bicarb, once with water, and organic layer was concentrated in vacuo to give 6-(3,5-dimethylisoxazol-4-yl)-2-ethoxy-N-methoxy-N-methyl-1H-benzo[d]imidazole-4-carboxamide as a dark oil. Crude material was used without further purification.

Provenance & Evidence