Hydrochloric Acid → HCID 58566337, Verbindung

HRID 1876446Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1876446
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:9]=[C:10]([CH2:19][O:20][C:21]3[CH:26]=[CH:25][C:24]([CH2:27][CH:28]([CH3:34])[C:29]([O:31]CC)=[O:30])=[CH:23][CH:22]=3)[C:11]3[O:15][C:14]([CH3:17])([CH3:16])[CH2:13][C:12]=3[CH:18]=2)=[CH:4][CH:3]=1.CO.[OH-].[Li+].Cl>O1CCCC1.CCOC(C)=O.O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[CH:9]=[C:10]([CH2:19][O:20][C:21]3[CH:22]=[CH:23][C:24]([CH2:27][CH:28]([CH3:34])[C:29]([OH:31])=[O:30])=[CH:25][CH:26]=3)[C:11]3[O:15][C:14]([CH3:17])([CH3:16])[CH2:13][C:12]=3[CH:18]=2)=[CH:6][CH:7]=1

Komponenten

8

Edukt 4

HCID 313Hydrochloric AcidHCID 887MethanolHCID 3939Lithium HydroxideHCID 67406232Ethyl 3-(4-((5-(4-chlorophenyl)-2,2-dimethyl-2,3-dihydrobenzofuran-7-yl)methoxy)phenyl)-2-methylpropanoate

Produkt 1

HCID 58566337HCID 58566337, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

A solution of ethyl 3-(4-((5-bromo-2,2-dimethyl-2,3-dihydrobenzofuran-7-yl)methoxy)phenyl)-2-methylpropanoate (110) (80 mg, 0.179 mmol), 4-chlorophenyl boronic acid (30.8 mg, 0.197 mmol), Pd(PPh3)4 (7 mg, 00.006 mmol), saturated sodium bicarbonate (0.64 mL), methanol (1.5 mL), and toluene (0.64 mL) was heated in a microwave reactor for 40 minutes at 110° C. To the solution was added water and ethyl acetate and the two layers were separated. The crude compound was purified by flash column chromatography on silica gel with hexanes and EtOAc (30%) to afford ethyl 3-(4-((5-(4-chlorophenyl)-2,2-dimethyl-2,3-dihydrobenzofuran-7-yl)methoxy)phenyl)-2-methylpropanoate. The ester was dissolved in tetrahydrofuran (1.0 mL), methanol (1.0 mL) and water (3 mL). Lithium hydroxide was added and the reaction was stirred at room temperature for 24 hours. The mixture was acidified with 1M HCl and diluted with EtOAc (3 mL). The organic layer was washed with brine (3 mL), dried over sodium sulfate and filtered. The filtrate was concentrated in vacuo to yield 3-(4-((5-(4-chlorophenyl)-2,2-dimethyl-2,3-dihydrobenzofuran-7-yl)methoxy)phenyl)-2-methylpropanoic acid (111). 1H NMR (400 MHz, CDCl3) δ 7.43-7.39 (m, 3H), 7.34 (d, J=8.3 Hz, 2H), 7.28 (d, J=8.3 Hz, 1H), 7.09 (d, J=8.2 Hz, 2H), 6.94 (d, J=8.3 Hz, 2H), 5.05 (s, 2H), 3.07 (s, 2H), 3.00 (dd, J=13.4, 6.4 Hz, 1H), 2.73-2.67 (m, 1H), 2.62-2.58 (m, 1H), 1.51 (s, 6H), 1.17 (d, J=6.8 Hz, 3H). LC-MS ESI m/z: found 449.1 [M−H]−.

Aufarbeitung

  1. washThe organic layer was washed with brine (3 mL)
  2. dry with materialdried over sodium sulfate
  3. filtrationfiltered
  4. concentrationThe filtrate was concentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-d198a7e3a4084b6184f8d819329a64aa
Quelldatensatz
uspto-grants-2012_11
Patentnummer
US08309600B2

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