Ammonia → 2-pyridinecarboxaldehyde N-oxide
反応式
[C:1]([O:7]CC)(=O)[CH2:2][C:3]([CH3:5])=O.N.C(OC(C1[CH:21]([C:22]2C=CC=C[N+:23]=2[O-:28])C(C(OCC)=O)=C(C)NC=1C)=O)C>C(O)C>[N+:23]1([O-:28])[C:2]([CH:1]=[O:7])=[CH:3][CH:5]=[CH:21][CH:22]=1参加物
5
実験手順
Analogously to the process described in Example 1 there is obtained from 22.5 g of pyridine-2-carboxaldehyde-1-oxide, 37 ml of ethyl acetoacetate and 14.5 ml of 30% aqueous ammonia in 29 ml of absolute ethanol, 2,6-dimethyl-4-(1-oxido-2-pyridyl)-1,4-dihydropyridine-3,5-dicarboxylic acid dietyl ester which, after recrystallisation from 250 ml of acetonitrile, melts at 198°-200°.
出典と根拠
- ORDレコード
- ord-98f24e04cf44442a864f20efdb7b4024
- 出典データセット
- uspto-grants-1985_02
- 特許番号
- US04497808
反応ノート
読み込み中…