反应详情

A solution of hexahydro-pyrrolo[3,4-c]pyrrole-2-carboxylic acid tert-butyl ester (1.0 g, 4.7 mmol), 2-chloropyrimidine (0.54 g, 4.7 mmol), triethylamine (2 ml, 14 mmol) and ethyl alcohol (25 ml) was maintained at reflux for 4 hours. The solution was then cooled to room temperature and concentrated to afford a solid residue that was dissolved in dichloromethane (CH2Cl2), which was washed sequentially with sat. aq. sodium bicarbonate and brine, dried (Na2SO4), filtered, and concentrated to afford 0.82 g (60%) of the product as an orange solid: 1H NMR (400 MHz, CDCl3): δ 8.34 (d, J=4.8 Hz, 2H), 6.53 (t, J=4.8 Hz, 1H), 3.86-3.79 (m, 2H), 3.72-3.62 (m, 2H), 3.57-3.50 (m, 2H), 3.41-3.33 (m, 1H), 3.33-3.26 (m, 1H), 3.05-2.96 (m, 2H), 1.47 (s, 9H); LRMS m/z 291 (M+H)+.

1. temperatureat reflux for 4 hours
2. concentrationconcentrated
3. customto afford a solid residue that
4. washwhich was washed sequentially with sat. aq. sodium bicarbonate and brine
5. dry with materialdried (Na2SO4)
6. filtrationfiltered
7. concentrationconcentrated