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Potassium Bicarbonate → (Rac)-2-{[(2-chloro-5-nitro-pyrimidin-4-yl)-cyclopentyl-amino]-methyl}-pentanoic acid ethyl ester

HRID 2111295
ノート
印刷プレビュー

反応式

HRID 2111295 の反応式
[CH2:1]([O:3][C:4](=[O:16])[CH:5]([CH2:9][NH:10][CH:11]1[CH2:15][CH2:14][CH2:13][CH2:12]1)[CH2:6][CH2:7][CH3:8])[CH3:2].[Cl:17][C:18]1[N:23]=[C:22](Cl)[C:21]([N+:25]([O-:27])=[O:26])=[CH:20][N:19]=1.C(=O)(O)[O-].[K+]>O.C(OCC)C>[CH2:1]([O:3][C:4](=[O:16])[CH:5]([CH2:9][N:10]([C:20]1[C:21]([N+:25]([O-:27])=[O:26])=[CH:22][N:23]=[C:18]([Cl:17])[N:19]=1)[CH:11]1[CH2:12][CH2:13][CH2:14][CH2:15]1)[CH2:6][CH2:7][CH3:8])[CH3:2]
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 3

HCID 516893Potassium BicarbonateHCID 5212662,4-Dichloro-5-nitropyrimidineHCID 57635032(Rac)-2-cyclopentylaminomethyl-pentanoic acid ethyl ester

生成物 1

HCID 87618409(Rac)-2-{[(2-chloro-5-nitro-pyrimidin-4-yl)-cyclopentyl-amino]-methyl}-pentanoic acid ethyl ester収率 72.8%

試薬・触媒・溶媒 2

HCID 962Water溶媒
HCID 3283
Diethyl Ether
溶媒

実験手順

A solution of 1.14 g (0.005 mole) of (rac)-2-cyclopentylaminomethyl-pentanoic acid ethyl ester in 25 mL of water was added dropwise to a solution of 0.97 g (0.005 mole) of 2,4-dichloro-5-nitro-pyrimidine in 25 mL of ethyl ether. At 0 degrees, 1.0 g (0.010 mole) of potassium bicarbonate was added. The mixture was stirred at ambient temperature for 3 hours. The layers were then separated, and the aqueous layer extracted twice with 30 mL of ether. The combined organic layers were dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. Purification by silica gel chromatography, eluting with hexanes-ethyl acetate (100:0-80:20) gave 1.4 g of (rac)-2-{[(2-chloro-5-nitro-pyrimidin-4-yl)-cyclopentyl-amino]-methyl}-pentanoic acid ethyl ester (IV-16).

後処理

  1. customThe layers were then separated
  2. extractionthe aqueous layer extracted twice with 30 mL of ether
  3. dry with materialThe combined organic layers were dried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customPurification by silica gel chromatography
  7. washeluting with hexanes-ethyl acetate (100:0-80:20)

出典と根拠

ORDレコード
ord-481d7382797e42eb80261c94a9bbdfe8
出典データセット
uspto-grants-2009_04
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07517873B2

反応ノート

読み込み中…

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