Oxygen → HCID 131729096, compound

HRID 1671414Notes

Reaction equation

HRID 1671414 reaction equation
[Cl:1][CH2:2][CH2:3][CH2:4][S:5]([O:8][CH2:9][C:10]([CH3:25])([CH3:24])[CH:11]([O:14][CH2:15][C:16]1[CH:21]=[CH:20][C:19]([O:22][CH3:23])=[CH:18][CH:17]=1)[CH:12]=C)(=[O:7])=[O:6].O=O.[O:28]=[O+][O-].CSC>ClCCl>[Cl:1][CH2:2][CH2:3][CH2:4][S:5]([O:8][CH2:9][C:10]([CH3:24])([CH3:25])[CH:11]([O:14][CH2:15][C:16]1[CH:17]=[CH:18][C:19]([O:22][CH3:23])=[CH:20][CH:21]=1)[CH:12]=[O:28])(=[O:6])=[O:7]

Participants

6

Reactant 4

HCID 977OxygenHCID 1068Dimethyl SulfideHCID 24823OzoneHCID 131729097HCID 131729097, compound

Product 1

HCID 131729096HCID 131729096, compoundYield 77%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Following the general procedure for the preparation of aldehydes from alkenes of Description 11, (3R/S)-3-[(4-methoxyphenyl)methoxy]-2,2-dimethylpent-4-enyl (3-chloropropyl)sulfonate (14a) (4.0 g, 10.2 mmol) dissolved in 100 mL of dichloromethane (DCM) was treated with a mixture of oxygen and ozone (O2/O3). Upon completion of the reaction, 2 mL (1.69 g, 27.2 mmol) of dimethyl sulfide (DMS) was added. After work-up, the crude material was purified by silica gel column chromatography using a mixture of ethyl acetate (EtOAc) and hexane (Hxn) (EtOAc/Hxn=1:2) as eluent to provide 3.1 g (77% yield) of the title compound (14b) as a colorless oil. The analytical data was consistent with the proposed structure and with the data obtained for the enantiopure compound (13b).

Workup

  1. additionwas added
  2. customAfter work-up, the crude material was purified by silica gel column chromatography
  3. additiona mixture of ethyl acetate (EtOAc) and hexane (Hxn) (EtOAc/Hxn=1:2) as eluent

Sources & evidence

ORD record
ord-651b9ce1b0ae4bcf8f586b373153aa40
Source dataset
uspto-grants-2011_08
Patent number
US07994218B2

Reaction notes

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