反应详情

Triethylamine (16 μl) and isobutylchloroformate (14 μl) were added to a stirred solution of (±)-3-[2,4-bis(methoxymethoxy)phenyl]cyclohexanecarboxylic acid in anhydrous tetrahydrofuran (2 ml) at 0° C. under argon. After 30 min, aqueous ammonia solution (0.5 ml, 28% w/w) was added. The reaction mixture was partitioned between water (20 ml) and ethyl acetate (50 ml). The aqueous layer was extracted with ethyl acetate (2×20 ml) and the combined organic extracts were dried over magnesium sulfate and evaporated in vacuo to give the title compound (26 mg, 87%) as a mixture of diastereoisomers; m/z (ES+) 324 (M+H)+.

1. customThe reaction mixture was partitioned between water (20 ml) and ethyl acetate (50 ml)
2. extractionThe aqueous layer was extracted with ethyl acetate (2×20 ml)
3. dry with materialthe combined organic extracts were dried over magnesium sulfate
4. customevaporated in vacuo