Dimethylacetamide → 1-(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyl)-3-(5-cyano-2-thienylmethyl)-4-methylbenzene

HRID 1514473Notes

Reaction equation

HRID 1514473 reaction equation
[C:1]([O:4][C@@H:5]1[C@@H:10]([O:11][C:12](=[O:14])[CH3:13])[C@H:9]([O:15][C:16](=[O:18])[CH3:17])[C@@H:8]([CH2:19][O:20][C:21](=[O:23])[CH3:22])[O:7][C@H:6]1[C:24]1[CH:29]=[CH:28][C:27]([CH3:30])=[C:26]([CH2:31][C:32]2[S:33][C:34](Br)=[CH:35][CH:36]=2)[CH:25]=1)(=[O:3])[CH3:2].[CH3:38][N:39](C)C(=O)C>C(OCC)(=O)C.O.[C-]#N.[Zn+2].[C-]#N.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2].[Zn]>[C:1]([O:4][C@@H:5]1[C@@H:10]([O:11][C:12](=[O:14])[CH3:13])[C@H:9]([O:15][C:16](=[O:18])[CH3:17])[C@@H:8]([CH2:19][O:20][C:21](=[O:23])[CH3:22])[O:7][C@H:6]1[C:24]1[CH:29]=[CH:28][C:27]([CH3:30])=[C:26]([CH2:31][C:32]2[S:33][C:34]([C:38]#[N:39])=[CH:35][CH:36]=2)[CH:25]=1)(=[O:3])[CH3:2]

Participants

9

Reactant 2

HCID 31374DimethylacetamideHCID 666079031-(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyl)-3-(5-bromo-2-thienylmethyl)-4-methylbenzene

Product 1

HCID 666082091-(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyl)-3-(5-cyano-2-thienylmethyl)-4-methylbenzene

Reagents, catalysts & solvents 6

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 23994ZincCatalystHCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)CatalystHCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
120 °C

Procedure

1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-3-(5-bromo-2-thienylmethyl)-4-methylbenzene (500 mg) obtained in Example 159-(1) was dissolved in N,N-dimethylacetamide (10 ml), and added thereto were zinc cyanide (98 mg), tris(dibenzylideneacetone)dipalladium(0) (77 mg), 1,1′-bis(diphenylphosphino)ferrocene (47 mg) and zinc power (14 mg). The mixture was heated under stirring at 120° C. overnight. The reaction solution was cooled, diluted with ethyl acetate and water, and the insoluble materials were filtered off. The organic layer of the filtrate was washed twice with water and successively washed with brine. After drying the same over sodium sulfate, the solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (hexane:ethyl acetate=100:0-50:50) to give 1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-3-(5-cyano-2-thienylmethyl)-4-methylbenzene (207 mg) as colorless crystals. APCI-Mass m/Z 561 (M+NH4). (2) The above 1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-3-(5-cyano-2-thienylmethyl)-4-methylbenzene was treated in a manner similar to Example 106-(3) to give the desired 1-(β-D-glucopyranosyl)-3-(5-cyano-2-thienylmethyl)-4-methylbenzene as colorless powder. APCI-Mass m/Z 393 (M+NH4).

Workup

  1. additionadded
  2. temperatureThe mixture was heated
  3. temperatureThe reaction solution was cooled
  4. filtrationthe insoluble materials were filtered off
  5. washThe organic layer of the filtrate was washed twice with water
  6. washsuccessively washed with brine
  7. dry with materialAfter drying the same over sodium sulfate
  8. customthe solvent was evaporated under reduced pressure
  9. customthe residue was purified by silica gel column chromatography (hexane:ethyl acetate=100:0-50:50)

Sources & evidence

ORD record
ord-20b77f7915eb4940a378477a7ac107dc
Source dataset
uspto-grants-2012_07
Patent number
US08222219B2

Reaction notes

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