反应详情

温度

0 °C

Add hydrogen chloride (1M in ethyl ether; 2.55 mL; 8 equiv; 2.55 mmoles) to a 0° C. solution of tert-butyl {2-[2-(2,3-dihydro-1H-inden-2-ylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl]-2-oxoethyl}[2-(1H-1,2,3-triazol-4-yl)ethyl]carbamate (0.165 g; 1.0 equiv; 0.318 mmoles) in dichloromethane (2 mL) and methanol (1 mL). After stirring for 1 hour at 0° C., concentrate the mixture. Redissolve the crude product in a 10:1 mixture of dichloromethane:methanol and wash with saturated sodium bicarbonate. Extract the aqueous layer with additional 10:1 mixtures of dichloromethane:methanol (4×). Dry the combined organic extracts over magnesium sulfate, filter, and concentrate to afford 1-[2-(2,3-dihydro-1H-inden-2-ylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl]-2-{[2-(1H-1,2,3-triazol-4-yl)ethyl]amino}ethanone (0.136 g; 102%) as a brown foam: MS (m/z): 419 (M+1).

1. concentrationconcentrate the mixture
2. dissolutionRedissolve the crude product
3. additionin a 10:1 mixture of dichloromethane
4. washmethanol and wash with saturated sodium bicarbonate
5. extractionExtract the aqueous layer with additional 10:1 mixtures of dichloromethane
6. dry with materialDry the combined organic extracts over magnesium sulfate
7. filtrationfilter
8. concentrationconcentrate