Bromine → HCID 86714033, compound

HRID 576315Notes

Reaction equation

HRID 576315 reaction equation
[Cl:1][C:2]1[C:3]([CH2:48][C:49]2[CH:54]=[CH:53][C:52]([CH2:55][CH3:56])=[CH:51][CH:50]=2)=[CH:4][C:5]([CH:9]2[C@H:14]([O:15][CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[C@@H:13]([O:23][CH2:24][C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)[C@H:12]([O:31][CH2:32][C:33]3[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=3)[C@@H:11]([CH2:39][O:40][CH2:41][C:42]3[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=3)[O:10]2)=[C:6]([OH:8])[CH:7]=1.[Br:57]Br>C(O)(=O)C>[Br:57][C:7]1[C:2]([Cl:1])=[C:3]([CH2:48][C:49]2[CH:54]=[CH:53][C:52]([CH2:55][CH3:56])=[CH:51][CH:50]=2)[CH:4]=[C:5]([CH:9]2[C@H:14]([O:15][CH2:16][C:17]3[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=3)[C@@H:13]([O:23][CH2:24][C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)[C@H:12]([O:31][CH2:32][C:33]3[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=3)[C@@H:11]([CH2:39][O:40][CH2:41][C:42]3[CH:43]=[CH:44][CH:45]=[CH:46][CH:47]=3)[O:10]2)[C:6]=1[OH:8]

Participants

4

Reactant 2

HCID 24408BromineHCID 71076977HCID 71076977, compound

Product 1

HCID 86714033HCID 86714033, compoundYield 90.5%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

To a mixture of 5-chloro-4-(4-ethylbenzyl)-2-((3S,4R,5R,6R)-3,4,5-tris(benzyloxy)-6-(benzyloxymethyl)tetrahydro-2H-pyran-2-yl)phenol (3.0 g, 3.90 mmol) and TEA (1.63 mL) in acetic acid (20.1 mL) was added dropwise bromine (0.30 mL, 5.85 mmol) at 0° C. under nitrogen atmosphere. After stirring for 2 h at rt, the reaction mixture was quenched with saturated NH4Cl solution (50 mL) and extracted with EtOAc (100 mL). The organic layer was washed with brine, dried over anhydrous MgSO4, filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography to provide the compound 32 (2.99 g, 3.53 mmol, 90%).

Workup

  1. customthe reaction mixture was quenched with saturated NH4Cl solution (50 mL)
  2. extractionextracted with EtOAc (100 mL)
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-2019e404fd104778badb396cfe1fcd42
Source dataset
uspto-grants-2015_05
Patent number
US09034921B2

Reaction notes

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