Lithium pyrrolidinoborohydride → 9-(2,3-Di-p-tolyl-7,8-dihydropyrido[2,3-b]pyrazin-5(6H)-yl)nonanoic acid

HRID 517897

反応式

HRID 517897 の反応式
O=[C:2]1[N:25]([CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][C:34]([OH:36])=[O:35])[C:6]2=[N:7][C:8]([C:18]3[CH:23]=[CH:22][C:21]([CH3:24])=[CH:20][CH:19]=3)=[C:9]([C:11]3[CH:16]=[CH:15][C:14]([CH3:17])=[CH:13][CH:12]=3)[N:10]=[C:5]2[CH2:4][CH2:3]1.N1([BH3-])CCCC1.[Li+]>C1COCC1>[C:14]1([CH3:17])[CH:13]=[CH:12][C:11]([C:9]2[N:10]=[C:5]3[CH2:4][CH2:3][CH2:2][N:25]([CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][C:34]([OH:36])=[O:35])[C:6]3=[N:7][C:8]=2[C:18]2[CH:23]=[CH:22][C:21]([CH3:24])=[CH:20][CH:19]=2)=[CH:16][CH:15]=1

参加物

4

反応物 2

HCID 23697345Lithium pyrrolidinoborohydrideHCID 716576499-(6-Oxo-2,3-di-p-tolyl-7,8-dihydropyrido[2,3-b]pyrazin-5(6H)-yl)nonanoic acid

生成物 1

HCID 896898969-(2,3-Di-p-tolyl-7,8-dihydropyrido[2,3-b]pyrazin-5(6H)-yl)nonanoic acid

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

9-(6-Oxo-2,3-di-p-tolyl-7,8-dihydropyrido[2,3-b]pyrazin-5(6H)-yl)nonanoic acid (Example 8) (200 mg, 0.412 mmol) in THF (10 ml) was stirred under N2 for 10 mins. Lithium pyrrolidinoborohydride (1M in THF) (2.059 ml, 2.059 mmol) was added carefully and the resulting mixture was stirred at RT for 1.5 hours. The reaction was quenched with 1M HCl and the mixture was concentrated under reduced pressure. The resulting mixture was extracted with DCM and the organic extracts were passed through a phase separating column. The organics were concentrated under reduced pressure and purification of the crude product by chromatography on silica eluting with 0-100% EtOAc in iso-hexane afforded the titled compound;

後処理

  1. customThe reaction was quenched with 1M HCl
  2. concentrationthe mixture was concentrated under reduced pressure
  3. extractionThe resulting mixture was extracted with DCM
  4. customseparating column
  5. concentrationThe organics were concentrated under reduced pressure and purification of the crude product by chromatography on silica eluting with 0-100% EtOAc in iso-hexane

出典と根拠

ORDレコード
ord-52b9509e4b13464eba5333f3799fc174
出典データセット
uspto-grants-2015_08
特許番号
US09115129B2

関連ノート

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