1,1,1-Trimethoxybutane → HCID 57447006, compound

Participants

Reaction Steps

The general method described in Step 3 of Example 15 was used to cyclize ethyl 4-(3-aminoquinolin-4-ylamino)butyrate (18.0 g, 65.9 mmol) by reaction with trimethyl orthobutyrate (10.4 g, 70.2 mmol) to provide ethyl 4-(2-propyl-1H-imidazo[4,5-c]quinolin-1-yl)butyrate (14.2 g) as a solid after chromatography on silica gel (elution with 5% methanol in dichloromethane).

Provenance & Evidence