Triphenylphosphine → HCID 22261108, compound

HRID 898456Notes

Reaction equation

HRID 898456 reaction equation
[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][C:12]([OH:15])=[C:11]([CH2:16][CH2:17][CH3:18])[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:19][C:20]1[O:24][C:23]([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)=[N:22][C:21]=1[CH2:31][CH2:32]O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>C1COCC1>[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][CH2:32][CH2:31][C:21]2[N:22]=[C:23]([C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)[O:24][C:20]=2[CH3:19])=[C:11]([CH2:16][CH2:17][CH3:18])[CH:10]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 7255852-(5-Methyl-2-phenyl-4-oxazolyl)ethanolHCID 222611274-(Benzyloxy)-2-propylphenol

Product 1

HCID 22261108HCID 22261108, compoundYield 68%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of 4-benzyloxy-2-propylphenol (1.00 g, 4.13 mmol), 2-(5-methyl-2-phenyloxazol-4-yl)ethanol (Japan Tobacco Inc WO 9518125) (0.84 g, 4.13 mmol), and triphenylphosphine (1.41 g, 5.37 mmol) in THF (17 mL) was treated dropwise at ambient temperature with diisopropyl azodicarboxylate (0.96 mL, 5.0 mmol). After 18 h, the reaction mixture was concentrated in vacuo. The residue was diluted with EtOAc, washed with brine (40 mL), dried (Na2SO4), and concentrated. The crude product was purified by radial chromatography using 10-15% ethyl acetate in hexanes to give the product (1.2 g, 68%). 1H. NMR (400 MHz, CDCl3) δ 7.98 (dd, J=7.8, 2.4 Hz, 2H), 7.45-7.30 (m, 8H), 6.78-6.69 (m, 3H), 4.99 (s, 2H), 4.19 (t, J=6.6 Hz, 2H), 2.96 (t, J=6.4 Hz, 2H), 2.50 (t, J=7.6 Hz, 2H), 2.38 (s, 3H), 1.53 (q, J=7 Hz, 2H), 0.88 (t, J=7 Hz, 3H); MS (FIA) m/e 42.8 (M+1).

Workup

  1. concentrationthe reaction mixture was concentrated in vacuo
  2. additionThe residue was diluted with EtOAc
  3. washwashed with brine (40 mL)
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated
  6. customThe crude product was purified by radial chromatography

Sources & evidence

ORD record
ord-fa0fcc517a004aea908d4e5476ec0f01
Source dataset
uspto-grants-2008_04
Patent number
US07351728B2

Reaction notes

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