Bromobenzene → 1-Methoxy-3-phenoxybenzene

Beteiligte Stoffe

Reaktionsschritte

3-Methoxyphenol (287.4 g; 2.3 Mol), 316.0 g (2.0 Mol) of bromobenzene, 552 g (4.0 Mol) of K2CO3, 12.0 g (0.19 Mol) of activated copper (prepared according to Org. Syn. Coll. Vol. II, p 445-6), Cu(II) acetate hydrate 2.0 g (11 mMol), CuO powder (2.0 g; 25 mMol), and 2.0 g of copper sulfate (13 mMol) were combined in 1500 mL of dry pyridine. The resultant mixture was heated under reflux for 3 days. After cooling, the mixture was concentrated under reduced pressure, then treated with 6N HCl. Extraction was carried out with ether. The combined organics were washed with water, dilute NaOH, and water, then concentrated under reduced pressure. The residue was distilled in vacuo to give 3-phenoxyanisole, distilling at 138-40° C./2 mm pressure, 119 g (75% yield). H1NMR (CDCl3) d: 3.81 (s, 3 H), 6.61 (m, 2 H), 6.68 (d, J=7.8 Hz, 1 H), 7.06 (d, J=8.3, 2 H), 7.14 (t, J=7.4 Hz, 1 H), 7.25 (t, J=8.4 Hz, 1 H), 7.37 (t, J=7.8 Hz, 2 H).

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