Isopropanol → (E)-isopropyl 3-(4-((6-((tert-butyldimethylsilyl)oxy)-2-(2-isopropylphenyl)benzo[b]thiophen-3-yl)oxy)phenyl)acrylate

HRID 632675ノート

反応式

HRID 632675 の反応式
[Si:1]([O:8][C:9]1[CH:10]=[CH:11][C:12]2[C:16]([O:17][C:18]3[CH:23]=[CH:22][C:21](/[CH:24]=[CH:25]/[C:26]([OH:28])=[O:27])=[CH:20][CH:19]=3)=[C:15]([C:29]3[CH:34]=[CH:33][CH:32]=[CH:31][C:30]=3[CH:35]([CH3:37])[CH3:36])[S:14][C:13]=2[CH:38]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[CH3:39][CH:40](O)[CH3:41].Cl.CN(C)CCCN=C=NCC>C(Cl)Cl.CN(C)C1C=CN=CC=1.CCOC(C)=O.CCCCCCC>[Si:1]([O:8][C:9]1[CH:10]=[CH:11][C:12]2[C:16]([O:17][C:18]3[CH:23]=[CH:22][C:21](/[CH:24]=[CH:25]/[C:26]([O:28][CH:40]([CH3:41])[CH3:39])=[O:27])=[CH:20][CH:19]=3)=[C:15]([C:29]3[CH:34]=[CH:33][CH:32]=[CH:31][C:30]=3[CH:35]([CH3:36])[CH3:37])[S:14][C:13]=2[CH:38]=1)([C:4]([CH3:5])([CH3:7])[CH3:6])([CH3:3])[CH3:2]

参加物

7

反応物 3

HCID 3776IsopropanolHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 131735440(E)-3-(4-((6-((tert-butyldimethylsilyl)oxy)-2-(2-isopropylphenyl)benzo[b]thiophen-3-yl)oxy)phenyl)acrylic acid

生成物 1

HCID 131735441(E)-isopropyl 3-(4-((6-((tert-butyldimethylsilyl)oxy)-2-(2-isopropylphenyl)benzo[b]thiophen-3-yl)oxy)phenyl)acrylate収率 55%

試薬・触媒・溶媒 3

HCID 142844-(Dimethylamino)pyridine触媒HCID 6344Dichloromethane溶媒HCID 21899848Ethylacetate heptane溶媒

実験手順

To a solution of (E)-3-(4-((6-((tert-butyldimethylsilyl)oxy)-2-(2-isopropylphenyl)benzo[b]thiophen-3-yl)oxy)phenyl)acrylic acid (59.6 mg, 0.109 mmol) in DCM (2.5 mL) was added i-PrOH (0.034 mL, 0.438 mmol), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (84 mg, 0.438 mmol) and 4-dimethylaminopyridine (8.02 mg, 0.066 mmol). The resulting mixture was stirred at room temperature for 75 min after which time the reaction was quenched by addition of water and diluted with DCM. The phases were separated and the aqueous layer was further extracted with DCM (3×). The combined organic layers were dried over anhydrous MgSO4, filtered and concentrated in vacuo. The resulting crude material was purified by column chromatography (SiO2, 0-30% EtOAc/Heptane) to (E)-isopropyl 3-(4-((6-((tert-butyldimethylsilyl)oxy)-2-(2-isopropylphenyl)benzo[b]thiophen-3-yl)oxy)phenyl)acrylate (35 mg, 0.060 mmol, 55% yield). 1H NMR (400 MHz, CDCl3) δ ppm 7.49 (d, J=16.0 Hz, 1H), 7.32-7.17 (m, 7H), 7.10-7.03 (m, 1H), 6.79 (d, J=8.8 Hz, 3H), 6.18 (d, J=16.1 Hz, 1H), 5.05 (p, J=6.2 Hz, 1H), 3.18 (p, J=6.8 Hz, 1H), 1.23 (d, J=6.4 Hz, 6H), 1.11 (d, J=6.8 Hz, 6H), 0.95 (s, 9H), 0.18 (s, 6H).

後処理

  1. customwas quenched by addition of water
  2. additiondiluted with DCM
  3. customThe phases were separated
  4. extractionthe aqueous layer was further extracted with DCM (3×)
  5. dry with materialThe combined organic layers were dried over anhydrous MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-bae2ced172b34e209425d2be1200491a
出典データセット
uspto-grants-2016_04
特許番号
US09321746B2

反応ノート

読み込み中…