Benzoyl chloride → HCID 86608516, compound

HRID 2104196Notes

Reaction equation

HRID 2104196 reaction equation
[C:1]([O:4][CH:5]1[C:6]([OH:45])([CH3:44])[CH2:7][CH2:8][CH:9]([O:36][Si:37]([CH2:42][CH3:43])([CH2:40][CH3:41])[CH2:38][CH3:39])[CH2:10][C:11]([O:13][CH:14](/[C:19](/[CH3:35])=[CH:20]/[CH:21]=[CH:22]/[CH:23]([CH3:34])[CH2:24][CH:25]2[O:33][CH:26]2[CH:27]([CH3:32])[CH:28]([OH:31])[CH2:29][CH3:30])[CH:15]([CH3:18])[CH:16]=[CH:17]1)=[O:12])(=[O:3])[CH3:2].[C:46](Cl)(=[O:53])[C:47]1[CH:52]=[CH:51][CH:50]=[CH:49][CH:48]=1>C(Cl)Cl.CN(C)C1C=CN=CC=1.C(OCC)(=O)C>[C:1]([O:4][CH:5]1[C:6]([OH:45])([CH3:44])[CH2:7][CH2:8][CH:9]([O:36][Si:37]([CH2:42][CH3:43])([CH2:38][CH3:39])[CH2:40][CH3:41])[CH2:10][C:11]([O:13][CH:14](/[C:19](/[CH3:35])=[CH:20]/[CH:21]=[CH:22]/[CH:23]([CH3:34])[CH2:24][CH:25]2[O:33][CH:26]2[CH:27]([CH3:32])[CH:28]([O:31][C:46](=[O:53])[C:47]2[CH:52]=[CH:51][CH:50]=[CH:49][CH:48]=2)[CH2:29][CH3:30])[CH:15]([CH3:18])[CH:16]=[CH:17]1)=[O:12])(=[O:3])[CH3:2]

Participants

6

Reactant 2

HCID 7412Benzoyl chlorideHCID 86608517HCID 86608517, compound

Product 1

HCID 86608516HCID 86608516, compoundYield 91%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
0 °C

Procedure

(8E,12E,14E)-7-acetoxy-6,21-dihydroxy-6,10,12,16,20-pentamethyl-3-triethylsiloxy-18,19-epoxytricosa-8,12,14-trien-11-olide (101 mg, 156 μmol) was dissolved in methylene chloride (1 mL). 4-dimethylaminopyridine (59.7 mg, 48.9 μmol) was added to the solution, and the solution was cooled to 0° C. Benzoyl chloride (28.0 μL, 241.0 μmol) was added to the solution, and the solution was stirred at room temperature for two hours. The reaction solution was diluted with ethyl acetate (20 mL), and the dilution was washed with purified water (4 mL) twice and brine (4 mL). The resulting organic layer was dried over sodium sulfate, and then filtered. The filtrate was concentrated. The concentrate was purified by silica gel column chromatography (MERCK Silica gel 60, 63 to 200 μm; hexane:ethyl acetate=5:1→4:1) to obtain the title compound (107 mg, 142 μmol, 91.0%) as a colorless oil.

Workup

  1. washthe dilution was washed with purified water (4 mL) twice
  2. dry with materialThe resulting organic layer was dried over sodium sulfate
  3. filtrationfiltered
  4. concentrationThe filtrate was concentrated
  5. customThe concentrate was purified by silica gel column chromatography (MERCK Silica gel 60, 63 to 200 μm; hexane:ethyl acetate=5:1→4:1)

Sources & evidence

ORD record
ord-014e517ffb6448a48343f651f40db7a5
Source dataset
uspto-grants-2009_08
Patent number
US07576204B2

Reaction notes

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