Dimethylformamide → 9-Chloro-5,6-dihydroimidazo[1,2-d]pyrido[3,4-f][1,4]oxazepine-2-carbaldehyde

HRID 1629422ノート

反応式

HRID 1629422 の反応式
C([Mg]Br)C.[Cl:5][C:6]1[N:20]=[CH:19][C:9]2[C:10]3[N:11]([CH:15]=[C:16](I)[N:17]=3)[CH2:12][CH2:13][O:14][C:8]=2[CH:7]=1.CN(C)[CH:23]=[O:24]>O1CCCC1>[Cl:5][C:6]1[N:20]=[CH:19][C:9]2[C:10]3[N:11]([CH:15]=[C:16]([CH:23]=[O:24])[N:17]=3)[CH2:12][CH2:13][O:14][C:8]=2[CH:7]=1

参加物

5

反応物 3

HCID 6228DimethylformamideHCID 582047809-Chloro-2-iodo-5,6-dihydroimidazo[1,2-d]pyrido[3,4-f][1,4]oxazepineHCID 178418443HCID 178418443、化合物

生成物 1

HCID 582044299-Chloro-5,6-dihydroimidazo[1,2-d]pyrido[3,4-f][1,4]oxazepine-2-carbaldehyde収率 98.5%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

Ethylmagnesium bromide (3.0 M in Et2O, 100 mmol, 33.3 mL) was added dropwise to a solution of 9-chloro-2-iodo-5,6-dihydroimidazo[1,2-d]pyrido[3,4-f][1,4]oxazepine (10.0 g, 28.8 mmol) in tetrahydrofuran (173 mL) at −20° C. The mixture was maintained at this temperature 20 min and then allowed to warm to ambient temperature for a 1 hr period. At this point, the reaction was re-cooled to −20° C. and N,N-dimethylformamide (8.9 mL, 115 mmol) was added to the mixture. Stirring was continued for 16 h before quenching with saturated aqueous ammonium chloride solution (220 mL) and further dilution with EtOAc (250 mL). The phases were separated and the aqueous layer was extracted twice with EtOAc. The combined organic portions were washed once with brine, dried over MgSO4, filtered and concentrated in vacuo. This provided 7.08 g (98% yield) of 9-chloro-5,6-dihydroimidazo[1,2-d]pyrido[3,4-f][1,4]oxazepine-2-carbaldehyde as a yellow solid in >95% purity as determined by analytical HPLC. MS (ESI+): m/z 249.8 (M+H+), calc. 249.65

後処理

  1. temperatureThe mixture was maintained at this temperature 20 min
  2. temperatureAt this point, the reaction was re-cooled to −20° C.
  3. custombefore quenching with saturated aqueous ammonium chloride solution (220 mL) and further dilution with EtOAc (250 mL)
  4. customThe phases were separated
  5. extractionthe aqueous layer was extracted twice with EtOAc
  6. washThe combined organic portions were washed once with brine
  7. dry with materialdried over MgSO4
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-290be337f3834795908892d264405c07
出典データセット
uspto-grants-2014_07
特許番号
US08785626B2

反応ノート

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