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Acetic Acid → Methyl 6-(2-((dimethylamino)methyl)imidazo[1,2-a]pyridin-6-yl)-5-ethyl-2-methoxynicotinate

HRID 1481706
ノート
印刷プレビュー

反応式

HRID 1481706 の反応式
[CH2:1]([C:3]1[C:4]([C:15]2[CH:16]=[CH:17][C:18]3[N:19]([CH:21]=[C:22]([CH:24]=O)[N:23]=3)[CH:20]=2)=[N:5][C:6]([O:13][CH3:14])=[C:7]([CH:12]=1)[C:8]([O:10][CH3:11])=[O:9])[CH3:2].[CH3:26][NH:27][CH3:28].CC(O)=O.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>ClC(Cl)C.C(Cl)Cl>[CH3:26][N:27]([CH2:24][C:22]1[N:23]=[C:18]2[CH:17]=[CH:16][C:15]([C:4]3[C:3]([CH2:1][CH3:2])=[CH:12][C:7]([C:8]([O:10][CH3:11])=[O:9])=[C:6]([O:13][CH3:14])[N:5]=3)=[CH:20][N:19]2[CH:21]=1)[CH3:28]
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 176Acetic AcidHCID 674DimethylamineHCID 5049666Sodium triacetoxyborohydrideHCID 89423055Methyl 5-ethyl-6-(2-formylimidazo[1,2-a]pyridin-6-yl)-2-methoxynicotinate

生成物 1

HCID 71284140Methyl 6-(2-((dimethylamino)methyl)imidazo[1,2-a]pyridin-6-yl)-5-ethyl-2-methoxynicotinate収率 101.1%

試薬・触媒・溶媒 2

HCID 6344
Dichloromethane
溶媒
HCID 63651,1-Dichloroethane溶媒

実験手順

To a solution of methyl 5-ethyl-6-(2-formylimidazo[1,2-a]pyridin-6-yl)-2-methoxynicotinate (90 mg, 0.27 mmol) in dichloroethane (1.5 mL) was added solution of dimethylamine (2M THF, 0.20 mL, 0.40 mmol) followed by AcOH (25 μL, 0.42 mmol). After stirring at room temperature for 5 min NaBH(OAc)3 (90 mg, 0.42 mmol) was added. Reaction was stirred at room temperature ˜1.5 h and monitored by LC/MS until starting aldehyde was completely consumed. Reaction was diluted with DCM (5 mL) and then quenched with NaHCO3 (aqueous saturated, 5 mL). Product was extracted with DCM (3×5 mL). Organic phase was washed with NaCl (aqueous saturated, 10 mL) and dried over Na2SO4. Removal of the solvent afforded methyl 6-(2-((dimethylamino)methyl)imidazo[1,2-a]pyridin-6-yl)-5-ethyl-2-methoxynicotinate (100.6 mg) which was used directly in the next step. LC-MS 369.3 [M+H]+, RT 0.83 min.

後処理

  1. additionwas added
  2. customReaction
  3. customwas completely consumed
  4. customReaction
  5. customquenched with NaHCO3 (aqueous saturated, 5 mL)
  6. extractionProduct was extracted with DCM (3×5 mL)
  7. washOrganic phase was washed with NaCl (aqueous saturated, 10 mL)
  8. dry with materialdried over Na2SO4
  9. customRemoval of the solvent

出典と根拠

ORDレコード
ord-64c8b635f47c416ebe066e490bea2a9e
出典データセット
uspto-grants-2016_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09409905B2

反応ノート

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