Phenol → 1,2-Dihydro-4-[6-(phenyloxy)hexyloxy]-1,2-dioxonaphthalene
Reaction equation
[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[OH-].C([N+](CCCC)(CCCC)CCCC)CCC.I[CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][O:33][C:34]1[C:43]2[C:38](=[CH:39][CH:40]=[CH:41][CH:42]=2)[C:37](=[O:44])[C:36](=[O:45])[CH:35]=1>CN(C=O)C>[C:1]1([O:7][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][O:33][C:34]2[C:43]3[C:38](=[CH:39][CH:40]=[CH:41][CH:42]=3)[C:37](=[O:44])[C:36](=[O:45])[CH:35]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1Participants
Procedure
Phenol (28 mg, 0.3 mmol) was treated with tetrabutylammonium hydroxide (0.3 mL of 1.0 M solution in methanol) and the reaction mixture was concentrated to dryness in vacuo. Iodonaphtoquinone 505 (115 mg, 0.3 mmol) in DMF (3 mL) was added to the tetrabutylammonium salt, stirred for 48 h and quenched with H2O (10 mL). The product was extracted with CHCl3, the extract was washed with H2O, then brine, dried (Na2SO4), and purified by chromatography (5% EtOAc in benzene) to give 512 as a yellow solid (45 mg, 43%) 1H NMR (CDCl3) 8.13 (d, J=7.4 Hz, 1H), 7.86 (d, J=7.4 Hz, 1H), 7.67 (t, J=7.6 Hz, 1H), 7.61 (t, J=7.5 Hz, 1H), 7.15-7.40 (m, 2H), 6.85-7.10 (m, 3H), 5.96 (s, 1H), 4.17 (t, J=6.5 Hz, 2H), 3.99 (t, J=6.2 Hz), 1.70-2.10 (m, 4H), 1.35-1.70 (m, 4H).
Workup
- concentrationthe reaction mixture was concentrated to dryness in vacuo
- customquenched with H2O (10 mL)
- extractionThe product was extracted with CHCl3
- washthe extract was washed with H2O
- dry with materialbrine, dried (Na2SO4)
- custompurified by chromatography (5% EtOAc in benzene)
Sources & evidence
- ORD record
- ord-aa7bbb5e36454113834fe8221fec2059
- Source dataset
- uspto-grants-2003_11
- Patent number
- US06649587B1
Reaction notes
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