Hydrochloric Acid → (1S,2S,3 S,4R,5 S)-2,3,4-tribenzyloxy-5-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-6,8-dioxabicyclo[3.2.1]octane-1-carboxylic acid

HRID 1055578Notes

Reaction equation

HRID 1055578 reaction equation
[CH2:1]([O:8][C@H:9]1[C@H:15]([O:16][CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[C@@H:14]([O:24][CH2:25][C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=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)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(=O)(O)[O-:54].[Na+].[Br-].[K+].Cl[O-].[Na+].Cl>O1CCCC1>[CH2:1]([O:8][C@H:9]1[C@H:15]([O:16][CH2:17][C:18]2[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=2)[C@@H:14]([O:24][CH2:25][C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=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([C:51]([OH:54])=[O:52])[CH2:11][O:12]2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

7

Reactant 5

HCID 313Hydrochloric AcidHCID 253877Potassium BromideHCID 516892Sodium BicarbonateHCID 23665760Sodium HypochloriteHCID 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 118377818(1S,2S,3 S,4R,5 S)-2,3,4-tribenzyloxy-5-[4-chloro-3-[(2,3-difluoro-4-methoxy-phenyl)methyl]phenyl]-6,8-dioxabicyclo[3.2.1]octane-1-carboxylic acidYield 100%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of [(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 210 (0.38 g, 0.49 mmol, obtained from the synthetic method described in step 13 example 21) in tetrahydrofuran (10 mL) were added aqueous sodium bicarbonate (0.46 g, 5.43 mmol), potassium bromide (11.75 mg, 0.10 mmol) and 2,2,6,6-tetramethylpiperidinooxy (7.7 mg, 0.05 mmol) in turn at 0° C., and then sodium hypochlorite (6.8 mL, 8.5 mmol, available chlorine ≧3.5%) was added dropwise. The mixture was stirred at 0° C. for 3 hours and acidified with aqueous HCl (3 N) till pH becomes 6. The resulting mixture was extracted with ethyl acetate (40 mL×2). The combined organic layers were dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo to give the title compound 22a (0.37 g, 100%) as yellow oil. This material was not further purified.

Workup

  1. extractionThe resulting mixture was extracted with ethyl acetate (40 mL×2)
  2. dry with materialThe combined organic layers were dried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. concentrationThe filtrate was concentrated in vacuo

Sources & evidence

ORD record
ord-625afe9baef94e07bd8c70b29b4db448
Source dataset
uspto-grants-2016_07
Patent number
US09394329B2

Reaction notes

Loading…