Triacetoxyperiodinane → HCID 86700850, compound

HRID 881748Notes

Reaction equation

HRID 881748 reaction equation
[Br:1][CH:2]1[C:7]2([C:10]3[CH:15]=[CH:14][C:13]([Cl:16])=[CH:12][CH:11]=3)[CH2:8][CH2:9][C:4]([CH2:17][OH:18])([CH2:5][O:6]2)[CH2:3]1.CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O>ClCCl>[Br:1][CH:2]1[C:7]2([C:10]3[CH:15]=[CH:14][C:13]([Cl:16])=[CH:12][CH:11]=3)[CH2:8][CH2:9][C:4]([CH:17]=[O:18])([CH2:5][O:6]2)[CH2:3]1

Participants

4

Reactant 2

HCID 159087TriacetoxyperiodinaneHCID 86700851HCID 86700851, compound

Product 1

HCID 86700850HCID 86700850, compoundYield 81.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To a stirred solution of [6-bromo-1-(4-chloro-phenyl)-2-oxa-bicyclo[2.2.2]oct-4-yl]-methanol (2.47 g, 7.45 mmol) in dichloromethane (100 ml) at −78° C., was added Dess-Martin periodinane (3.32 g, 7.82 mmol). The reaction mixture was allowed to warm to 0° C. for 30 minutes and then room temperature for 60 minutes. Most of the solvent was removed by evaporation under vacuum at the room temperature and the residue was purified by flash chromatography (heptanes/acetone 1/2) to afford 6-bromo-1-(4-chloro-phenyl)-2-oxa-bicyclo[2.2.2]octane-4-carbaldehyde (2.0 g, 81%) as colorless oil. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 1.98-2.21 (m, 3H) 2.34-2.44 (m, 1H) 2.69-2.80 (m, 1H) 2.82-2.92 (m, 1H) 3.92-4.08 (m, 2H) 4.21-4.32 (m, 1H) 7.25 (d, J=8.60 Hz, 2H) 7.34 (d, J=8.60 Hz, 2H) 9.44 (s, 1H).

Workup

  1. customMost of the solvent was removed by evaporation under vacuum at the room temperature
  2. customthe residue was purified by flash chromatography (heptanes/acetone 1/2)

Sources & evidence

ORD record
ord-433d38ef86f24fe485ececd9b10bd31a
Source dataset
uspto-grants-2015_03
Patent number
US08993619B2

Reaction notes

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