Phosphorus oxychloride → 4-Chloro-nicotinonitrile
反応式
COC1C=C(C=CC=1OC)C[N:7]1[CH:12]=[CH:11][C:10](=O)[C:9]([C:14]#[N:15])=[CH:8]1.[Li+].[Cl-].O=P(Cl)(Cl)[Cl:25]>>[Cl:25][C:10]1[C:9]([C:14]#[N:15])=[CH:8][N:7]=[CH:12][CH:11]=1参加物
4
実験手順
Alternatively, as shown in Scheme 3 below, the bisdimethylaminemethylene intermediate iii obtained by reaction of 3-oxo-butyronitrile ii with DMF-DMA can be reacted with 3,4-dimethoxybenzylamine at reflux in a solvent such as toluene to give 1-(3,4-dimethoxybenzyl)-4-oxo-1,4-dihydro-pyridine-3-carbonitrile viii. Reaction of viii with excess LiCl in refluxing POCl3 results in removal of the dimethoxybenzyl group and conversion to the corresponding 4-chloro-nicotinonitrile v.
出典と根拠
- ORDレコード
- ord-a8bc9026c88149f59cba0ddf56555047
- 出典データセット
- uspto-grants-2010_08
- 特許番号
- US07781591B2
反応ノート
読み込み中…