Triacetoxyperiodinane → [(R)-2-(3'-chloro-biphenyl-4-yl)-1-formyl-ethyl]-carbamic acid tert-butyl ester

HRID 70910ノート

反応式

HRID 70910 の反応式
[C:1]([O:5][C:6](=[O:25])[NH:7][C@@H:8]([CH2:23][OH:24])[CH2:9][C:10]1[CH:15]=[CH:14][C:13]([C:16]2[CH:21]=[CH:20][CH:19]=[C:18]([Cl:22])[CH:17]=2)=[CH:12][CH:11]=1)([CH3:4])([CH3:3])[CH3:2].CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O>C(Cl)Cl.CCOC(C)=O>[C:1]([O:5][C:6](=[O:25])[NH:7][C@@H:8]([CH:23]=[O:24])[CH2:9][C:10]1[CH:15]=[CH:14][C:13]([C:16]2[CH:21]=[CH:20][CH:19]=[C:18]([Cl:22])[CH:17]=2)=[CH:12][CH:11]=1)([CH3:2])([CH3:4])[CH3:3]

参加物

5

反応物 2

HCID 159087TriacetoxyperiodinaneHCID 67208767HCID 67208767、化合物

生成物 1

HCID 86648198[(R)-2-(3'-chloro-biphenyl-4-yl)-1-formyl-ethyl]-carbamic acid tert-butyl ester収率 52.8%

試薬・触媒・溶媒 2

HCID 6344Dichloromethane溶媒HCID 8857Ethyl Acetate溶媒

実験手順

Next, to a solution of [(R)-2-(3′-chloro-biphenyl-4-yl)-1-hydroxymethyl-ethyl]-carbamic acid tert-butyl ester (2.0 g, 5.53 mmol) in DCM (30 mL) is added Dess-Martin periodinane (2.81 g, 6.63 mmol). After being stirred at room temperature for 2 h, the reaction mixture is diluted with EtOAc and washed with saturated NaHCO3 aqueous solution and brine. The organic layer is dried over Na2SO4 and concentrated. The residue is purified by flash column chromatography (silica gel, eluent; heptane/EtOAc=100:0 to 0:100) to give [(R)-2-(3′-chloro-biphenyl-4-yl)-1-formyl-ethyl]-carbamic acid tert-butyl ester (1.05 g). HPLC retention time=1.27 minutes (condition A): MS (m+1)=360.

後処理

  1. washwashed with saturated NaHCO3 aqueous solution and brine
  2. dry with materialThe organic layer is dried over Na2SO4
  3. concentrationconcentrated
  4. customThe residue is purified by flash column chromatography (silica gel, eluent; heptane/EtOAc=100:0 to 0:100)

出典と根拠

ORDレコード
ord-b4e998f893e649b0a936e5588e57accb
出典データセット
uspto-grants-2014_09
特許番号
US08822534B2

反応ノート

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