Water → 4-[6-Butyl-5-(4-cyclohexyloxy-phenyl)-pyridazin-3-yloxy]-piperidine-1-carboxylic acid tert-butyl ester

HRID 401896

反応式

HRID 401896 の反応式
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([OH:14])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].CC(C)([O-])C.[K+].[CH2:21]([C:25]1[N:26]=[N:27][C:28](Cl)=[CH:29][C:30]=1[C:31]1[CH:36]=[CH:35][C:34]([O:37][CH:38]2[CH2:43][CH2:42][CH2:41][CH2:40][CH2:39]2)=[CH:33][CH:32]=1)[CH2:22][CH2:23][CH3:24].O>C1COCC1.C(OCC)(=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([O:14][C:28]2[N:27]=[N:26][C:25]([CH2:21][CH2:22][CH2:23][CH3:24])=[C:30]([C:31]3[CH:32]=[CH:33][C:34]([O:37][CH:38]4[CH2:43][CH2:42][CH2:41][CH2:40][CH2:39]4)=[CH:35][CH:36]=3)[CH:29]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

参加物

7

反応物 4

HCID 962WaterHCID 643502Tert-butyl 4-hydroxypiperidine-1-carboxylateHCID 23665647Potassium tert-butoxideHCID 866577793-Butyl-6-chloro-4-(4-cyclohexyloxy-phenyl)-pyridazine

生成物 1

HCID 673746634-[6-Butyl-5-(4-cyclohexyloxy-phenyl)-pyridazin-3-yloxy]-piperidine-1-carboxylic acid tert-butyl ester

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒2 回HCID 8857Ethyl Acetate溶媒

反応条件

温度
0 °C

実験手順

To a stirred solution of 4-hydroxy-piperidine-1-carboxylic acid tert-butyl ester (94.2 mmol, 18.97 g) in THF (100 mL) at room temperature was added potassium tert-butoxide (87.0 mmol, 9.76 g) and continued stirring for 15 min. The reaction mixture was cooled to 0° C. using an ice bath. To this was added a solution of 3-butyl-6-chloro-4-(4-cyclohexyloxy-phenyl)-pyridazine (72.5 mmol, 25.0 g) in THF (100 mL). The reaction mixture was allowed to slowly attain room temperature while stirring overnight. The reaction was poured into a mixture of water (300 mL) and ethyl acetate (300 mL). The mixture was shaken and separated. The aqueous layer was extracted with ethyl acetate (2×100 mL). The combined organic layer was washed with brine (50 mL), dried (Na2SO4), filtered and concentrated under reduced pressure. The residue was purified on 330 g SiO2 cartridge using an ethyl acetate/hexanes gradient to provide 4-[6-butyl-5-(4-cyclohexyloxy-phenyl)-pyridazin-3-yloxy]-piperidine-1-carboxylic acid tert-butyl ester.

後処理

  1. customwas allowed to slowly attain room temperature
  2. stirringwhile stirring overnight
  3. stirringThe mixture was shaken
  4. customseparated
  5. extractionThe aqueous layer was extracted with ethyl acetate (2×100 mL)
  6. washThe combined organic layer was washed with brine (50 mL)
  7. dry with materialdried (Na2SO4)
  8. filtrationfiltered
  9. concentrationconcentrated under reduced pressure
  10. customThe residue was purified on 330 g SiO2 cartridge

出典と根拠

ORDレコード
ord-d2baa909299f43b0955afcad52a233bb
出典データセット
uspto-grants-2014_06
特許番号
US08741900B2

関連ノート

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