Hydrochloric Acid → 8-[(2,6-Difluorobenzyl)oxy]-2-methyl-6-(pyrrolidin-1-yl)imidazo[1,2-a]pyridine-3-carboxylic acid

HRID 1624087ノート

反応式

HRID 1624087 の反応式
[F:1][C:2]1[CH:29]=[CH:28][CH:27]=[C:26]([F:30])[C:3]=1[CH2:4][O:5][C:6]1[C:7]2[N:8]([C:17]([C:21]([O:23]CC)=[O:22])=[C:18]([CH3:20])[N:19]=2)[CH:9]=[C:10]([N:12]2[CH2:16][CH2:15][CH2:14][CH2:13]2)[CH:11]=1.[OH-].[Li+].Cl>C1COCC1.CO>[F:30][C:26]1[CH:27]=[CH:28][CH:29]=[C:2]([F:1])[C:3]=1[CH2:4][O:5][C:6]1[C:7]2[N:8]([C:17]([C:21]([OH:23])=[O:22])=[C:18]([CH3:20])[N:19]=2)[CH:9]=[C:10]([N:12]2[CH2:13][CH2:14][CH2:15][CH2:16]2)[CH:11]=1

参加物

5

反応物 3

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 86718167Ethyl 8-[(2,6-difluorobenzyl)oxy]-2-methyl-6-(pyrrolidin-1-yl)imidazo[1,2-a]pyridine-3-carboxylate

生成物 1

HCID 867181688-[(2,6-Difluorobenzyl)oxy]-2-methyl-6-(pyrrolidin-1-yl)imidazo[1,2-a]pyridine-3-carboxylic acid

試薬・触媒・溶媒 1

HCID 21899815MeOH tetrahydrofuran溶媒

反応条件

温度
40 °C

実験手順

90 mg of ethyl 8-[(2,6-difluorobenzyl)oxy]-2-methyl-6-(pyrrolidin-1-yl)imidazo[1,2-a]pyridine-3-carboxylate (Example 32A; 0.217 mmol, 1 equivalent) were dissolved in 6 ml of THF/methanol 5:1, 1.1 ml of 1N aqueous lithium hydroxide solution (1.1 mmol, 5 equivalents) were added and the mixture was warmed to 40° C. and stirred at this temperature for 20 h. The mixture was cooled, acidified to pH 4 with 6 N hydrochloric acid and concentrated. Water was added to the solid formed and the product was triturated, filtered off with suction, washed with water and dried under reduced pressure. This gave 87 mg of the title compound (93% of theory).

後処理

  1. additionwere added
  2. temperatureThe mixture was cooled
  3. concentrationconcentrated
  4. additionWater was added to the solid
  5. customformed
  6. customthe product was triturated
  7. filtrationfiltered off with suction
  8. washwashed with water
  9. customdried under reduced pressure

出典と根拠

ORDレコード
ord-61dd729e845d43ecbe0178bdbbc8671d
出典データセット
uspto-grants-2014_07
特許番号
US08778964B2

反応ノート

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