反应详情

温度

20 °C

HATU (0.201 g) was added in one portion to a stirred solution at 0° C. of 3-(3-(2-(8-(2-isopropylthiazole-4-carbonyl)-5-oxa-2,8-diazaspiro[3.5]nonan-2-yl)ethyl)phenethoxy)propanoic acid trifluoroacetate salt (0.25 g) (example 176 step b), N-ethyl-2,2-dimethoxyethanamine (0.059 g) (U.S. Pat. No. 2,707,186) and triethylamine (0.283 ml) in DMF (4 mL). The mixture was stirred at 20° C. for 3 hours and then partitioned between ethyl acetate and aq brine, the organic layer was washed with brine (×2), dried, filtered and the solvent evaporated under reduced pressure to afford the subtitled compound. Yield 0.250 g.

1. custompartitioned between ethyl acetate and aq brine
2. washthe organic layer was washed with brine (×2)
3. customdried
4. filtrationfiltered
5. customthe solvent evaporated under reduced pressure