Benzoyl chloride → HCID 21024031, Verbindung

HRID 1795692Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1795692
[Li+].C[Si]([N-][Si](C)(C)C)(C)C.[CH2:11]([O:13][CH:14]([O:16][CH:17]1[CH2:29][CH2:28][C:27]([O:31][CH:32]([O:34][CH2:35][CH3:36])[CH3:33])([CH3:30])[CH:26]([OH:37])[CH:25]=[CH:24][CH:23]([CH3:38])[CH:22](/[C:39](/[CH3:60])=[CH:40]/[CH:41]=[CH:42]/[CH:43]([CH3:59])[CH2:44][CH:45]2[O:58][CH:46]2[CH:47]([CH3:57])[CH:48]([O:51][CH:52]([O:54][CH2:55][CH3:56])[CH3:53])[CH2:49][CH3:50])[O:21][C:19](=[O:20])[CH2:18]1)[CH3:15])[CH3:12].[C:61](Cl)(=[O:68])[C:62]1[CH:67]=[CH:66][CH:65]=[CH:64][CH:63]=1.C(OCC)(=O)C>O1CCCC1.O>[C:61]([O:37][CH:26]1[C:27]([O:31][CH:32]([O:34][CH2:35][CH3:36])[CH3:33])([CH3:30])[CH2:28][CH2:29][CH:17]([O:16][CH:14]([O:13][CH2:11][CH3:12])[CH3:15])[CH2:18][C:19]([O:21][CH:22](/[C:39](/[CH3:60])=[CH:40]/[CH:41]=[CH:42]/[CH:43]([CH3:59])[CH2:44][CH:45]2[O:58][CH:46]2[CH:47]([CH3:57])[CH:48]([O:51][CH:52]([O:54][CH2:55][CH3:56])[CH3:53])[CH2:49][CH3:50])[CH:23]([CH3:38])[CH:24]=[CH:25]1)=[O:20])(=[O:68])[C:62]1[CH:67]=[CH:66][CH:65]=[CH:64][CH:63]=1

Komponenten

7

Edukt 4

HCID 7412Benzoyl chlorideHCID 8857Ethyl AcetateHCID 2733832Lithium HexamethyldisilazideHCID 21023947(8E,12E,14E)-3,6,21-Tri(1-ethoxyethoxy)-7-hydroxy-6,10,12,16,20-pentamethyl-18,19-epoxytricosa-8,12,14-trien-11-olide

Produkt 1

HCID 21024031HCID 21024031, VerbindungAusbeute 54 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

LiHMDS (1.0 M tetrahydrofuran solution, 81 μL, 81 μmol) was added dropwise to a solution of (8E,12E,14E)-3,6,21-tri(1-ethoxyethoxy)-7-hydroxy-6,10,12,16,20-pentamethyl-18,19-epoxytricosa-8,12,14-trien-11-olide (10 mg, 14 μmol) in tetrahydrofuran (1 mL) at −40° C. under nitrogen atmosphere. After stirring at the same temperature for 15 min., a solution of benzoyl chloride (17.8 mg, 125 μmol) in tetrahydrofuran (0.4 mL) was added dropwise thereto and the mixture was stirred at 0° C. for 7 hours. Ethyl Acetate and water were added to the reaction solution, and the mixture was extracted with ethyl acetate. The resulting organic layer was dried over anhydrous magnesium sulfate, filtered and then evaporated. The resulting residue was purified by silica gel column chromatography (Kanto silica gel 60N, 40 to 50 μm; ethyl acetate-hexane=1:4) to obtain the title compound (6.1 mg, 54%) as a colorless oil.

Aufarbeitung

  1. stirringthe mixture was stirred at 0° C. for 7 hours
  2. extractionthe mixture was extracted with ethyl acetate
  3. dry with materialThe resulting organic layer was dried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. customevaporated
  6. customThe resulting residue was purified by silica gel column chromatography (Kanto silica gel 60N, 40 to 50 μm; ethyl acetate-hexane=1:4)

Quellen und Nachweise

ORD-Eintrag
ord-2ee86c3d1f2c40efaeefd80291f29e8a
Quelldatensatz
uspto-grants-2006_04
Patentnummer
US07026352B1

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