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Acetic Acid → Benzyl 4-[4-[(3-chloropyrazin-2-yl)methylcarbamoyl]cyclohexyl]piperazine-1-carboxylate

HRID 245658
ノート
印刷プレビュー

反応式

HRID 245658 の反応式
[Cl:1][C:2]1[C:3]([CH2:8][NH:9][C:10]([CH:12]2[CH2:17][CH2:16][C:15](=O)[CH2:14][CH2:13]2)=[O:11])=[N:4][CH:5]=[CH:6][N:7]=1.C(O)(=O)C.[N:23]1([C:29]([O:31][CH2:32][C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)=[O:30])[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]1.C([BH3-])#N.[Na+]>ClCCl>[Cl:1][C:2]1[C:3]([CH2:8][NH:9][C:10]([CH:12]2[CH2:17][CH2:16][CH:15]([N:26]3[CH2:25][CH2:24][N:23]([C:29]([O:31][CH2:32][C:33]4[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=4)=[O:30])[CH2:28][CH2:27]3)[CH2:14][CH2:13]2)=[O:11])=[N:4][CH:5]=[CH:6][N:7]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 176Acetic AcidHCID 643495Benzyl piperazine-1-carboxylateHCID 5003444Sodium cyanoborohydrideHCID 86674630N-((3-chloropyrazin-2-yl)methyl)-4-oxocyclohexanecarboxamide

生成物 1

HCID 86674631Benzyl 4-[4-[(3-chloropyrazin-2-yl)methylcarbamoyl]cyclohexyl]piperazine-1-carboxylate収率 134.6%

試薬・触媒・溶媒 1

HCID 6344
Dichloromethane
溶媒

実験手順

N-((3-chloropyrazin-2-yl)methyl)-4-oxocyclohexanecarboxamide (3.7 mmol, 1 g) was dissolved in dichloromethane (10 mL) and acetic acid (0.1 mL) was added. To this solution benzyl 1-piperazinecarboxylate (11.2 mmol, 2.16 mL) and sodium cyanoborohydride (7.47 mmol, 0.47 g) were added subsequently. The mixture was stirred overnight at room temperature. Reaction was quenched with an aqueous sodium hydrogencarbonate solution and extracted twice with dichloromethane. The combined organic layers were dried over phase separation filter, concentrated under reduced pressure and purified using column chromatography (silica gel; dichloromethane/methanol) to yield 2.35 g of the title compound as a mixture of cis and trans isomers which was used in the next step without further purification.

後処理

  1. customReaction
  2. customwas quenched with an aqueous sodium hydrogencarbonate solution
  3. extractionextracted twice with dichloromethane
  4. customThe combined organic layers were dried over phase separation
  5. filtrationfilter
  6. concentrationconcentrated under reduced pressure
  7. custompurified

出典と根拠

ORDレコード
ord-610880f09088408884e26a553760192c
出典データセット
uspto-grants-2014_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08658794B2

反応ノート

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