Ethyl Acetate → HCID 59750880, compound

HRID 748808Notes

Reaction equation

HRID 748808 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([CH2:11][C:12]2[CH:17]=[C:16]([F:18])[CH:15]=[CH:14][C:13]=2[F:19])(=[O:10])=[O:9])=[CH:4][CH:3]=1.[Si:20]([O:37][CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43]O)([C:33]([CH3:36])([CH3:35])[CH3:34])([C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1)[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1.C(C=P(CCCC)(CCCC)CCCC)#N.C(OCC)(=O)C>C1(C)C=CC=CC=1>[Si:20]([O:37][CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43][CH:11]([C:12]1[CH:17]=[C:16]([F:18])[CH:15]=[CH:14][C:13]=1[F:19])[S:8]([C:5]1[CH:6]=[CH:7][C:2]([Cl:1])=[CH:3][CH:4]=1)(=[O:10])=[O:9])([C:33]([CH3:34])([CH3:35])[CH3:36])([C:27]1[CH:28]=[CH:29][CH:30]=[CH:31][CH:32]=1)[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 4622928CyanomethylenetributylphosphoraneHCID 99010282-(((4-Chlorophenyl)sulfonyl)methyl)-1,4-difluorobenzeneHCID 11013734HCID 11013734, compound

Product 1

HCID 59750880HCID 59750880, compoundYield 79.4%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

The 2-[(4-chlorophenyl)sulfonylmethyl]-1,4-difluorobenzene (470 mg, 1.55 mmol) obtained in Example 5 and 6-(t-butyldiphenylsilyloxy)-1-hexanol (740 mg, 2.08 mmol) were dissolved in toluene (20 ml), followed by the addition of cyanomethylenetri-n-butylphosphorane (500 mg, 2.07 mmol). Under an argon atmosphere, the resulting mixture was heated under reflux for 7 hours. After the reaction mixture was allowed to cool down, the residue obtained by concentrating the reaction mixture under reduced pressure was subjected to flash silica gel chromatography. The fraction obtained from the hexane:ethyl acetate=10:1 eluate was concentrated under reduced pressure, whereby the title compound (786 mg, 1.23 mmol, 79%) was obtained as a pale yellowish brown oil.

Workup

  1. temperatureUnder an argon atmosphere, the resulting mixture was heated
  2. temperatureunder reflux for 7 hours
  3. temperatureto cool down
  4. customthe residue obtained
  5. concentrationby concentrating the reaction mixture under reduced pressure
  6. customThe fraction obtained from the hexane

Sources & evidence

ORD record
ord-c76382c077274c698e8582489cd80828
Source dataset
uspto-grants-2008_07
Patent number
US07399775B2

Reaction notes

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