反应详情

温度

60 °C

A mixture of methyl quinuclidin-3-ylideneacetate hydrochloride (Example 18, Step 1) (2 g), ethanol (50 ml), 2M hydrochloric acid (5 ml) and 10% Pd/C (1 g) was stirred for 24 hours under H2 at atmospheric pressure, filtered through celite and evaporated to dryness. The residue was dissolved in concentrated hydrochloric acid (10 ml). heated at 60° C. for 18 hours, treated with a further 10 ml of concentrated hydrochloric acid, heated at 80° C. for 6 hours and evaporated to dryness. The residue was kept under vacuum over P2O5 for 3 days to give the title compound as a white solid (1.8 g); MS (+ve ion electrospray) m/z 170 (MH+, 100%).

1. filtrationfiltered through celite
2. customevaporated to dryness
3. dissolutionThe residue was dissolved in concentrated hydrochloric acid (10 ml)
4. additiontreated with a further 10 ml of concentrated hydrochloric acid
5. temperatureheated at 80° C. for 6 hours
6. customevaporated to dryness
7. waitThe residue was kept under vacuum over P2O5 for 3 days