Dimethylformamide → 7-(alpha,alpha,alpha-Trifluoro-m-tolyl)pyrazolo[1,5-a]pyrimidine-3-carboxaldehyde

HRID 225273

反応式

HRID 225273 の反応式
P(Cl)(Cl)(Cl)=O.[F:6][C:7]([F:24])([F:23])[C:8]1[CH:13]=[CH:12][CH:11]=[C:10]([C:14]2[N:19]3[N:20]=[CH:21][CH:22]=[C:18]3[N:17]=[CH:16][CH:15]=2)[CH:9]=1.CN(C)[CH:27]=[O:28]>>[F:24][C:7]([F:23])([F:6])[C:8]1[CH:13]=[CH:12][CH:11]=[C:10]([C:14]2[N:19]3[N:20]=[CH:21][C:22]([CH:27]=[O:28])=[C:18]3[N:17]=[CH:16][CH:15]=2)[CH:9]=1

参加物

4

実験手順

Five milliliters of phosphorus oxychloride is added dropwise to an ice cooled solution of 25 ml. of dimethylformamide and when this is complete 5.26 g. of 7-(α,α,α-trifluoro-m-tolyl)pyrazolo[1,5-a]pyrimidine is added and the reaction mixture is heated on a steam bath for one hour. This is poured onto ice and made strongly basic to yield the desired compound, recovered by subsequent filtration, m.p. 168°-170° C.

後処理

  1. temperaturethe reaction mixture is heated on a steam bath for one hour
  2. additionThis is poured onto ice

出典と根拠

ORDレコード
ord-ec0e87970c7e43239f88ecd4f162462a
出典データセット
uspto-grants-1980_11
特許番号
US04236005

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