Picolinic acid → 6-(2-Chloro-phenoxy)-3,3-dimethyl-2,3-dihydro-pyrrolo[3,2-c]pyridine-1-carboxylic acid tert-butyl ester

HRID 1475403ノート

反応式

HRID 1475403 の反応式
[C:1]([O:5][C:6]([N:8]1[C:16]2[CH:15]=[C:14](Br)[N:13]=[CH:12][C:11]=2[C:10]([CH3:19])([CH3:18])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[Cl:20][C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][C:22]=1[OH:27].N1C=CC=CC=1C(O)=O.P([O-])([O-])([O-])=O.[K+].[K+].[K+]>CS(C)=O.[Cu]I>[C:1]([O:5][C:6]([N:8]1[C:16]2[CH:15]=[C:14]([O:27][C:22]3[CH:23]=[CH:24][CH:25]=[CH:26][C:21]=3[Cl:20])[N:13]=[CH:12][C:11]=2[C:10]([CH3:19])([CH3:18])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

参加物

7

反応物 4

HCID 1018Picolinic acidHCID 72452-ChlorophenolHCID 62657Potassium Phosphate, TribasicHCID 86724003Tert-butyl 6-bromo-3,3-dimethyl-2,3-dihydro-1H-pyrrolo[3,2-C]pyridine-1-carboxylate

生成物 1

HCID 709805436-(2-Chloro-phenoxy)-3,3-dimethyl-2,3-dihydro-pyrrolo[3,2-c]pyridine-1-carboxylic acid tert-butyl ester収率 82.9%

試薬・触媒・溶媒 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 679Dimethyl Sulfoxide溶媒

実験手順

A solution of 6-bromo-3,3-dimethyl-2,3-dihydro-pyrrolo[3,2-c]pyridine-1-carboxylic acid tert-butyl ester (150 mg, 0.46 mmol), 2-chlorophenol (0.071 mL, 0.69 mmol), CuI (17 mg, 0.046 mmol), picolinic acid (23 mg, 0.092 mmol) and potassium phosphate (195 mg, 0.92 mmol) in DMSO (1 mL) was stirred at 85° C. overnight. The mixture was allowed to cool and then partitioned between EtOAc and water. The organic extract was washed with brine, dried (MgSO4) and evaporated in vacuo. Chromatography (SiO2; gradient elution with 2-10% ethyl acetate in petrol) gave the title compound (143 mg). MS: [M+H]+=375.

後処理

  1. temperatureto cool
  2. custompartitioned between EtOAc and water
  3. extractionThe organic extract
  4. washwas washed with brine
  5. dry with materialdried (MgSO4)
  6. customevaporated in vacuo
  7. washChromatography (SiO2; gradient elution with 2-10% ethyl acetate in petrol)

出典と根拠

ORDレコード
ord-388cf3889889497b9429517ff1bb5d84
出典データセット
uspto-grants-2015_04
特許番号
US09018214B2

反応ノート

読み込み中…