Hydrochloric Acid → HCID 118377790, compound

HRID 1055563Notes

Reaction equation

HRID 1055563 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][CH2:48][CH3:49])=[C:43]([F:50])[CH:42]=4)[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][CH2:48][CH3:49])=[C:43]([F:50])[CH:42]=4)[CH:34]=3)[O:32][C@@:10]1([C:51]([OH:54])=[O:52])[CH2:11][O:12]2)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

7

Reactant 5

HCID 313Hydrochloric AcidHCID 253877Potassium BromideHCID 516892Sodium BicarbonateHCID 23665760Sodium HypochloriteHCID 86685130HCID 86685130, compound

Product 1

HCID 118377790HCID 118377790, compoundYield 117.6%

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-[(4-ethoxy-3-fluoro-phenyl) methyl]phenyl]-6,8-dioxabicyclo[3.2.1]octane-1-yl]methanol 20a (1.0 g, 1.38 mmol, purchased from Shanghai Caerulum Pharma Discovery Co., Ltd.) in tetrahydrofuran (20 mL) were added saturated aqueous sodium bicarbonate (20 mL), potassium bromide (33 mg, 0.28 mmol) and 2,2,6,6-tetramethylpiperidinooxy (22 mg, 0.14 mmol) in turn at 0° C., and then sodium hypochlorite (18 mL, available chlorine ≧5.5%) was added dropwise over a period of 20 min. The mixture was stirred at 0° C. for 40 min and acidified with aqueous HCl (1 N) till pH becomes 4. The resulting mixture was extracted with ethyl acetate (30 mL×2). The combined organic layers were washed with saturated brine (20 mL×2), dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo to give the title compound 20b (1.20 g, 117.6%) as yellow oil. This material was not further purified.

Workup

  1. extractionThe resulting mixture was extracted with ethyl acetate (30 mL×2)
  2. washThe combined organic layers were washed with saturated brine (20 mL×2)
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated in vacuo

Sources & evidence

ORD record
ord-441c52d49ba94276b52a701193a1ba77
Source dataset
uspto-grants-2016_07
Patent number
US09394329B2

Reaction notes

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