Methyl iodide → HCID 69025684, compound

HRID 2102425Notes

Reaction equation

HRID 2102425 reaction equation
[C:1]1([C:7]([O:9][C@@H:10]2[CH2:20][O:19][C@@H:12]3[C@@H:13]([OH:18])[C@@H:14]([O:17][C@H:11]23)[O:15][CH3:16])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH3:21]I>COCCOC.C(OCC)(=O)C.[Ag-]=O>[CH3:21][O:18][C@@H:13]1[C@H:12]2[O:19][CH2:20][C@@H:10]([O:9][C:7]([C:1]3[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=3)=[O:8])[C@H:11]2[O:17][C@H:14]1[O:15][CH3:16]

Participants

6

Reactant 2

HCID 6328Methyl iodideHCID 69024304HCID 69024304, compound

Product 1

HCID 69025684HCID 69025684, compoundYield 76%

Reagents, catalysts & solvents 3

HCID 178418778HCID 178418778, compoundCatalystHCID 80711,2-DimethoxyethaneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
60 °C

Procedure

A mixture of methyl 3,6-anhydro-5-O-(phenylcarbonyl)-β-D-glucofuranoside (1.03 g, 3.7 mmol), silver (1) oxide (0.85 g, 3.7 mmol) and methyl iodide (0.34 mL, 5.5 mmol) in DME (2 mL) was heated at 60° C. for 1 hour. After cooling to room temperature the reaction mixture was diluted with ethyl acetate (50 mL), filtered over celite, adsorbed on silica gel (10 g) and purified by flash chromatography (silica gel, 5-30% ethyl acetate-hexane) to give methyl 3,6-anhydro-2-O-methyl-5-O-(phenylcarbonyl)-β-D-glucofuranoside as a colorless oil, 0.82 g, 76% yield. 1H NMR (400 MHz; CDCl3): 8.11-8.09 (d, 2H), 7.60-7.56 (m, 1H), 7.46-7.44 (m, 2H), 5.24-5.20 (m, 1H), 5.18-5.09 (tr, 1H), 4.99 (s, 1H), 4.61-4.60 (d, 1H), 4.21-4.17 (tr, 1H), 4.08-4.03 (tr, 1H), 3.81 (s, 1H), 3.40 (s, 3H), 3.57 (s, 3H).

Workup

  1. temperatureAfter cooling to room temperature the reaction mixture
  2. filtrationfiltered over celite
  3. custompurified by flash chromatography (silica gel, 5-30% ethyl acetate-hexane)

Sources & evidence

ORD record
ord-ac9fadc4a92c445dae7864b72d277baa
Source dataset
uspto-grants-2009_08
Patent number
US07576074B2

Reaction notes

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