Sodium Bicarbonate → 1,1-Dimethylethyl (2S)-4-[(6-amino-4-methyl-3-pyridinyl)methyl]-2-methyl-1-piperazinecarboxylate

HRID 534779ノート

反応式

HRID 534779 の反応式
[NH2:1][C:2]1[N:7]=[CH:6][C:5]([CH:8]=O)=[C:4]([CH3:10])[CH:3]=1.[CH3:11][C@H:12]1[CH2:17][NH:16][CH2:15][CH2:14][N:13]1[C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C([O-])(O)=O.[Na+]>ClCCCl>[NH2:1][C:2]1[N:7]=[CH:6][C:5]([CH2:8][N:16]2[CH2:15][CH2:14][N:13]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[C@@H:12]([CH3:11])[CH2:17]2)=[C:4]([CH3:10])[CH:3]=1

参加物

6

反応物 4

HCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 10081508tert-Butyl (2S)-2-methylpiperazine-1-carboxylateHCID 552846706-Amino-4-methylnicotinaldehyde

生成物 1

HCID 592621751,1-Dimethylethyl (2S)-4-[(6-amino-4-methyl-3-pyridinyl)methyl]-2-methyl-1-piperazinecarboxylate収率 53.6%

試薬・触媒・溶媒 1

HCID 111,2-Dichloroethane溶媒

実験手順

A mixture of 6-amino-4-methyl-3-pyridinecarbaldehyde (D99) (0.053 g, 0.39 mmol), 1,1-dimethylethyl (2S)-2-methyl-1-piperazinecarboxylate (0.117 g, 0.58 mmol) and sodium tri(acetoxy)borohydride (0.206 g, 0.97 mmol) in 1,2-DCE (10 mL) was sonicated to aid dissolution of the starting material then stirred at room temperature overnight. Saturated aqueous NaHCO3 (30 mL) was added and the mixture was stirred for 24 h. The reaction mixture was extracted with DCM (3×10 mL) and the organics were dried and concentrated to give the crude title compound as an oil (0.067 g) which was used in the next step without further purification. MS (ES): MH+ 321.3, MNa+ 343.3.

後処理

  1. customwas sonicated
  2. dissolutiondissolution of the starting material
  3. stirringthe mixture was stirred for 24 h
  4. extractionThe reaction mixture was extracted with DCM (3×10 mL)
  5. customthe organics were dried
  6. concentrationconcentrated

出典と根拠

ORDレコード
ord-505e05e11a314995a538ac4309cf1836
出典データセット
uspto-grants-2014_10
特許番号
US08853218B2

反応ノート

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