Sodium Carbonate → (S)-2-(Tert-butoxycarbonylamino)-3-(3'-chlorobiphenyl-4-yl)propanoic acid

HRID 333334ノート

反応式

HRID 333334 の反応式
[C:1]([NH:8][C@H:9]([C:18]([OH:20])=[O:19])[CH2:10][C:11]1[CH:16]=[CH:15][C:14](Br)=[CH:13][CH:12]=1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].[Cl:21][C:22]1[CH:23]=[C:24](B(O)O)[CH:25]=[CH:26][CH:27]=1.C([O-])([O-])=O.[Na+].[Na+]>COCCOC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[C:4]([O:3][C:1]([NH:8][C@@H:9]([CH2:10][C:11]1[CH:16]=[CH:15][C:14]([C:26]2[CH:25]=[CH:24][CH:23]=[C:22]([Cl:21])[CH:27]=2)=[CH:13][CH:12]=1)[C:18]([OH:20])=[O:19])=[O:2])([CH3:7])([CH3:6])[CH3:5]

参加物

6

反応物 3

HCID 10340Sodium CarbonateHCID 2734323(3-Chlorophenyl)boronic acidHCID 2734477(2S)-3-(4-bromophenyl)-2-{[(tert-butoxy)carbonyl]amino}propanoic acid

生成物 1

HCID 58280562(S)-2-(Tert-butoxycarbonylamino)-3-(3'-chlorobiphenyl-4-yl)propanoic acid収率 66%

試薬・触媒・溶媒 2

HCID 178418397HCID 178418397、化合物触媒HCID 80711,2-Dimethoxyethane溶媒

反応条件

温度
85 °C

実験手順

To a solution of Boc-4-bromo-L-phenylalanine (15 g, 43.6 mmol) in DME (180 ml) at room temperature was added 3-chlorobenzeneboronic acid (8.52 g, 54.5 mmol) followed by aq. Na2CO3 (32.7 ml, 65.4 mmol) and Pd(PPh3)4 (1.511 g, 1.307 mmol). The mixture was stirred at 85° C. for 3 hours. The reaction mixture was filtered and added EtOAc and acidified by 1M HCl to pH˜5. The combined organic layer was washed with brine and dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The obtained residue was purified by flash chromatography (silica gel, 5 to 20% EtOAc/Heptane) and gave the title compound: 12.0 g (yield: 66%). LCMS (condition A): 374.2 (M−1); retention time=1.57 min.

後処理

  1. filtrationThe reaction mixture was filtered
  2. additionadded EtOAc
  3. washThe combined organic layer was washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe obtained residue was purified by flash chromatography (silica gel, 5 to 20% EtOAc/Heptane)

出典と根拠

ORDレコード
ord-04d81aa93bf7411a99e92ef80f624111
出典データセット
uspto-grants-2014_11
特許番号
US08877815B2

反応ノート

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