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Diisopropylethylamine → (+/-)-3-({5-[1-(4'-Tert-butyl-2,6-dimethyl-biphenyl-4-yloxy)-ethyl]-thiophene-2-carbonyl}-amino)-propionic acid methyl ester

HRID 661002
ノート
印刷プレビュー

反応式

HRID 661002 の反応式
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[C:16]([CH3:17])=[CH:15][C:14]([O:18][CH:19]([C:21]3[S:25][C:24]([C:26](O)=[O:27])=[CH:23][CH:22]=3)[CH3:20])=[CH:13][C:12]=2[CH3:29])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].Cl.[CH3:31][O:32][C:33](=[O:37])[CH2:34][CH2:35][NH2:36].O.ON1C2C=CC=CC=2N=N1.C(N(CC)C(C)C)(C)C.Cl.CN(C)CCCN=C=NCC>CN(C=O)C.O>[CH3:31][O:32][C:33](=[O:37])[CH2:34][CH2:35][NH:36][C:26]([C:24]1[S:25][C:21]([CH:19]([O:18][C:14]2[CH:13]=[C:12]([CH3:29])[C:11]([C:8]3[CH:7]=[CH:6][C:5]([C:1]([CH3:3])([CH3:4])[CH3:2])=[CH:10][CH:9]=3)=[C:16]([CH3:17])[CH:15]=2)[CH3:20])=[CH:22][CH:23]=1)=[O:27]
参加物実験手順後処理出典と根拠反応ノート

参加物

8

反応物 5

HCID 81531DiisopropylethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 2734767Methyl 3-aminopropanoate hydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 67485042(+/-)-5-[1-(4'-Tert-butyl-2,6-dimethyl-biphenyl-4-yloxy)-ethyl]-thiophene-2-carboxylic acid

生成物 1

HCID 59355988
(+/-)-3-({5-[1-(4'-Tert-butyl-2,6-dimethyl-biphenyl-4-yloxy)-ethyl]-thiophene-2-carbonyl}-amino)-propionic acid methyl ester
収率 71.4%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

実験手順

To a mixture of (±)-5-[1-(4′-tert-butyl-2,6-dimethyl-biphenyl-4-yloxy)-ethyl]-thiophene-2-carboxylic acid (0.546 g, 1.34 mmol), 3-amino-propionic acid methyl ester hydrochloride (0.204 g, 1.46 mmol), and 1-hydroxybenzotriazole hydrate (HOBt, 0.217 g, 1.60 mmol) in DMF (12.3 mL) is added N, N-diisopropylethylamine (0.70 mL, 4.01 mmol), then N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDCI, 0.333 g, 1.74 mmol) and stirred overnight. The reaction mixture is poured into H2O (25 mL) and extracted with EtOAc (3×25 mL). Combined organic extracts are washed with H2O, brine, dried over MgSO4, filtered, and concentrated. The residue is loaded onto silica gel and eluted using hexanes with an ethyl acetate gradient from 0% to 75% to provide (±)-3-({5-[1-(4′-tert-butyl-2,6-dimethyl-biphenyl-4-yloxy)-ethyl]-thiophene-2-carbonyl}-amino)-propionic acid methyl ester (0.472 g, 71%) as a white solid. MS (ES): 492.1 [M−H]−. The racemic material is separated by chiral HPLC (column: Chiralpak OD-H 4.6×150 mm; eluent: 10:90 3A alcohol/Heptane; flow rate: 0.6 mL/min; UV absorbance wavelength: 270 nm) to provide Isomer 1 (0.180 g, 98.3% ee) and Isomer 2 (0.190 g, 96.7% ee).

後処理

  1. extractionextracted with EtOAc (3×25 mL)
  2. washCombined organic extracts are washed with H2O, brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. washeluted

出典と根拠

ORDレコード
ord-6f30d0d762464e72990f78a842f93085
出典データセット
uspto-grants-2011_12
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08084489B2

反応ノート

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