Benzoyl chloride → 1,2,3,4-Tetra-O-benzoyl-L-fucose

HRID 2056319Notes

Reaction equation

HRID 2056319 reaction equation
[C:1](Cl)(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[O:10]=[CH:11][C@H:12]([C@@H:14]([C@@H:16]([C@H:18]([CH3:20])[OH:19])[OH:17])[OH:15])[OH:13]>N1C=CC=CC=1>[CH3:20][C@@H:18]1[O:19][CH:11]([O:10][C:1]([C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[O:8])[C@@H:12]([O:13][C:1]([C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[O:8])[CH:14]([O:15][C:1]([C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[O:8])[C@H:16]1[O:17][C:1]([C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1)=[O:8]

Participants

4

Reactant 2

HCID 7412Benzoyl chlorideHCID 3034656L-(-)-Fucose

Product 1

HCID 717524001,2,3,4-Tetra-O-benzoyl-L-fucose

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

Benzoyl chloride (21.4 g, 152.3 mmol; 17.7 mL) was added dropwise to a cooled solution of L-fucose (5.0 g, 30.5 mmol) in pyridine (100 mL), at 0-5° C., and the mixture was stirred for three hours at room temperature. The mixture was poured onto ice water and extracted with ethyl acetate (EtOAc). The extracts were successively washed with ice cold dilute HCl, aqueous NaHCO3, and brine, dried over anhydrous MgSO4, and concentrated. The product was used for the next step without further purification.

Workup

  1. additionThe mixture was poured onto ice water
  2. extractionextracted with ethyl acetate (EtOAc)
  3. washThe extracts were successively washed with ice cold dilute HCl, aqueous NaHCO3, and brine
  4. dry with materialdried over anhydrous MgSO4
  5. concentrationconcentrated
  6. customThe product was used for the next step without further purification

Sources & evidence

ORD record
ord-6c9ca79f8a2140b4b43df5383739ecf2
Source dataset
uspto-grants-2008_02
Patent number
US07335500B2

Reaction notes

Loading…