1,2-Dichlorobenzene → (1S,2S,3S,4R,5S)-5-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-1-(hydroxymethyl)-6,8-dioxabicyclo[3.2.1]octane-2,3,4-triol

HRID 1912997Notes

Reaction equation

HRID 1912997 reaction equation
C([O:8][C@H:9]1[C@H:15]([O:16]CC2C=CC=CC=2)[C@@H:14]([O:24]CC2C=CC=CC=2)[C@:13]2([C:33]3[CH:38]=[CH:37][C:36]([Cl:39])=[C:35]([CH2:40][C:41]4[CH:46]=[CH:45][C:44]([O:47][CH3:48])=[C:43]([F:49])[C:42]=4[F:50])[CH:34]=3)[O:32][C@@:10]1([CH2:51][OH:52])[CH2:11][O:12]2)C1C=CC=CC=1.ClC1C=CC=CC=1Cl>[Pd]>[Cl:39][C:36]1[CH:37]=[CH:38][C:33]([C@@:13]23[O:32][C@@:10]([CH2:51][OH:52])([CH2:11][O:12]2)[C@@H:9]([OH:8])[C@H:15]([OH:16])[C@H:14]3[OH:24])=[CH:34][C:35]=1[CH2:40][C:41]1[CH:46]=[CH:45][C:44]([O:47][CH3:48])=[C:43]([F:49])[C:42]=1[F:50]

Participants

4

Reactant 2

HCID 72391,2-DichlorobenzeneHCID 86685114[(1S,2S,3S,4R,5S)-2,3,4-tribenzyloxy-5-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-6,8-dioxabicyclo[3.2.1]octan-1-yl]methanol

Product 1

HCID 86685115(1S,2S,3S,4R,5S)-5-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-1-(hydroxymethyl)-6,8-dioxabicyclo[3.2.1]octane-2,3,4-triolYield 95.3%

Reagents, catalysts & solvents 1

HCID 23938PalladiumCatalyst

Procedure

[(1S,2S,3S,4R,5S)-2,3,4-tribenzyloxy-5-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-6,8-dioxabicyclo[3.2.1]octan-1-yl]methanol 2p (350 mg, 0.48 mmol) was dissolved in 10 mL of mixed solution (THF and MeOH, v:v=1:1), followed by addition of o-dichlorobenzene (0.55 mL, 4.8 mmol) and Palladium/carbon (300 mg, 10%) in turn. The mixture was exchanged with H2 three times and stirred for 3 hours, filtered with silica gel and the filtrate was concentrated under reduced pressure and the resulting residue was purified by silica gel chromatography with elution system A to obtain the title compound (1S,2S,3S,4R,5S)-5-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-1-(hydroxymethyl)-6,8-dioxabicyclo[3.2.1]octane-2,3,4-triol 2 (210 mg, white solid), yield: 95.5%. MS m/z (ESI): 459.1 [M+1];

Workup

  1. filtrationfiltered with silica gel
  2. concentrationthe filtrate was concentrated under reduced pressure
  3. customthe resulting residue was purified by silica gel chromatography with elution system

Sources & evidence

ORD record
ord-388a612bc90f4b0a82cd6f26c37a3ef7
Source dataset
uspto-grants-2013_12
Patent number
US08609622B2

Reaction notes

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