Water → HCID 85785007、化合物

HRID 1591786ノート

反応式

HRID 1591786 の反応式
[C:1]([C:5]1[CH:10]=[C:9]([C:11]2[N:12]=[C:13]([CH2:16]O)[S:14][CH:15]=2)[CH:8]=[C:7]([C:18]([CH3:21])([CH3:20])[CH3:19])[C:6]=1[OH:22])([CH3:4])([CH3:3])[CH3:2].C(Br)(Br)(Br)[Br:24].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O>ClCCl>[Br:24][CH2:16][C:13]1[S:14][CH:15]=[C:11]([C:9]2[CH:10]=[C:5]([C:1]([CH3:4])([CH3:3])[CH3:2])[C:6]([OH:22])=[C:7]([C:18]([CH3:21])([CH3:20])[CH3:19])[CH:8]=2)[N:12]=1

参加物

6

反応物 4

HCID 962WaterHCID 11205Carbon tetrabromideHCID 11776TriphenylphosphineHCID 198835522,6-Di-tert-butyl-4-[2-(hydroxymethyl)-1,3-thiazol-4-yl]phenol

生成物 1

HCID 85785007HCID 85785007、化合物収率 92%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

反応条件

温度
0 °C

実験手順

1.5 g (4.70 mmol) of intermediate 334.2, (2,6-ditert-butyl-4-[2-(hydroxymethyl)-1,3-thiazol-4-yl]phenol is dissolved in dichloromethane (30 ml). After adding CBr4 (2.02 g; 6.10 mmol), the reaction medium is cooled down to 0° C. PPh3 (1.48 g; 5.63 mmol) is added by fractions then the mixture is left to return to ambient temperature. The reaction medium is then poured into ice-cooled water before being extracted with dichloromethane. The organic phase is washed with salt water before being dried over magnesium sulphate, filtered and concentrated under vacuum. The expected product is obtained after chromatography on a silica column (eluent: 30% of ethyl acetate in heptane), in order to produce a brown oil with a yield of 92%. This product is sufficiently pure to be used directly in the following stage.

後処理

  1. waitthe mixture is left
  2. customto return to ambient temperature
  3. additionThe reaction medium is then poured into ice-
  4. extractionbefore being extracted with dichloromethane
  5. washThe organic phase is washed with salt water
  6. dry with materialbefore being dried over magnesium sulphate
  7. filtrationfiltered
  8. concentrationconcentrated under vacuum

出典と根拠

ORDレコード
ord-116e4f6012c94b22b89fea122a0cc19d
出典データセット
uspto-grants-2007_11
特許番号
US07291641B2

反応ノート

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