Triphenylphosphine → HCID 69652272, compound

HRID 967478Notes

Reaction equation

HRID 967478 reaction equation
[CH2:1]([O:3][C:4]([C:6]1[CH:14]=[C:13]([OH:15])[C:9]2[O:10][CH2:11][O:12][C:8]=2[CH:7]=1)=[O:5])[CH3:2].[Cl:16][C:17]1[CH:22]=[C:21]([Cl:23])[CH:20]=[CH:19][C:18]=1[CH2:24][CH2:25]O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CCOC(/N=N/C(OCC)=O)=O>O1CCCC1>[CH2:1]([O:3][C:4]([C:6]1[CH:14]=[C:13]([O:15][CH2:25][CH2:24][C:18]2[CH:19]=[CH:20][C:21]([Cl:23])=[CH:22][C:17]=2[Cl:16])[C:9]2[O:10][CH2:11][O:12][C:8]=2[CH:7]=1)=[O:5])[CH3:2]

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 27340992,4-Dichlorophenethyl alcoholHCID 5462977Diethyl azodicarboxylateHCID 69652311HCID 69652311, compound

Product 1

HCID 69652272HCID 69652272, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

410 mg (1.95 mmol) of 7-Hydroxy-benzo[1,3]dioxole-5-carboxylic acid ethyl ester was dissolved in 20 ml of anhydrous tetrahydrofuran. To this solution was added 410 mg (2.15 mmol) of 2-(2,4-Dichlorophenyl)-ethanol, 1.9 g (equivalent to 5.85 mmol PPh3) of triphenylphosphine derivatized polystyrene and 1.0 g (5.85 mmol) of DEAD. The solution was shaken for 16 h at RT. The polymer was filtered off and washed with ethyl acetate. The solvent was removed under reduced pressure. The residue was taken-up in ethyl acetate and the solution was washed three times with water and twice with saturated aqueous sodium chloride. The organic phase was dried with magnesium sulphate, filtered and the solvent was removed under reduced pressure. The residue was chromatographed on silica gel eluting with ethyl acetate/n-heptane (1/5).

Workup

  1. filtrationThe polymer was filtered off
  2. washwashed with ethyl acetate
  3. customThe solvent was removed under reduced pressure
  4. washthe solution was washed three times with water
  5. dry with materialThe organic phase was dried with magnesium sulphate
  6. filtrationfiltered
  7. customthe solvent was removed under reduced pressure
  8. customThe residue was chromatographed on silica gel eluting with ethyl acetate/n-heptane (1/5)

Sources & evidence

ORD record
ord-e2754ded637a4f09b7f52d53317293d9
Source dataset
uspto-grants-2005_10
Patent number
US06953857B2

Reaction notes

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