反応式
CC([NH:8][C:9](=[O:12])[CH:10]=[CH2:11])(C)[CH2:3][C:4](=[O:6])[CH3:5].S(O)(O)(=O)=O.[OH:18][C:19]1([CH3:29])OC(C=C)=NC(C)(C)[CH2:20]1.N>O>[C:9]([NH2:8])(=[O:12])[CH:10]=[CH2:11].[CH3:3][C:4]([CH3:5])=[O:6].[CH3:20][C:19]([CH3:29])=[O:18]参加物
実験手順
A process for preparing N-(1,1-dimethyl-3-oxobutyl)acrylamide which comprises (1) contacting a dispersion of 5,6-dihydro-6-hydroxy-4,4,6-trimethyl-2-vinyl-1,3(4H)-oxazine sulfate (1:1) in a water-immiscible organic solvent with a neutralizing or alkalizing amount of gaseous ammonia at a temperature between about 10° C. and 30° C. to form a solution of diacetone acrylamide in said organic solvent and a precipitate of crystalline ammonium sulfate; (2) separating the crystals of ammonium sulfate; (3) cooling the organic mother liquors recovered from step (2) to about -10° C. to 20° C. to crystallize N-(1,1-dimethyl-3-oxobutyl)acrylamide therefrom; and (4) recovering the crystals of N-(1,1-dimethyl-3-oxobutyl)acrylamide, washing the recovered crystals with a cold water-immiscible organic solvent, and drying the same.
後処理
- customat a temperature between about 10° C. and 30° C.
出典と根拠
- ORDレコード
- ord-a448371afee64e17a8d7975d52d7a2a6
- 出典データセット
- uspto-grants-1979_02
- 特許番号
- US04140715
関連ノート
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