反应详情

A warm solution of 2,6-dichloro-3-nitrobenzaldehyde, 1.8 gm. in 20 ml. of ethanol was stirred into a solution of 0.9 gm. (0.008 equivs.) of carboxymethoxylamine hemihydrochloride and 0.45 gm. of sodium acetate, anhyd., in 20 ml. of water at room temperature. The mixture was heated on the steam bath for one-half hour, and was then evaporated to dryness at room temperature. The residue was triturated with cold water, filtered, washed with cold water and dried in air to obtain 2.1 gm. (87.4%) of crude material melting at 76°-84° C. This was purified from aqueous-methanol to obtain 1.9 gm. of pale cream-colored product melting at 82°-85° C.

1. customat room temperature
2. temperatureThe mixture was heated on the steam bath for one-half hour
3. customwas then evaporated to dryness at room temperature
4. customThe residue was triturated with cold water
5. filtrationfiltered
6. washwashed with cold water
7. customdried in air
8. customto obtain 2.1 gm
9. customThis was purified from aqueous-methanol
10. customto obtain 1.9 gm