反应详情

150 mg (0.470 mmol) of 4-(3-acetyl-2-methyl-5-oxo-1,4,5,6-tetrahydro-1,6-naphthyridin-4-yl)-3-methylbenzonitrile are dissolved under an argon atmosphere in 10 ml of abs. dichloromethane, and 178 mg (0.939 mmol) of triethyloxonium tetrafluoroborate are added. After a reaction time of two hours at room temperature (reaction checked by HPLC), the mixture is mixed with 5 ml of methanol and 0.5 ml of water and again stirred for 2 h. It is then diluted with 20 ml of water and extracted three times with dichloromethane. The combined organic phases are dried with sodium sulfate, and the solvent is removed in a rotary evaporator. The residue is purified by preparative HPLC (eluent: acetonitrile/water with 0.1% formic acid, gradient 20:80→95:5). 110 mg (67.4% of theory) of the title compound are obtained.

1. customAfter a reaction time of two hours at room temperature (reaction checked by HPLC)
2. extractionextracted three times with dichloromethane
3. dry with materialThe combined organic phases are dried with sodium sulfate
4. customthe solvent is removed in a rotary evaporator
5. customThe residue is purified by preparative HPLC (eluent: acetonitrile/water with 0.1% formic acid, gradient 20:80→95:5)