Toluene → Methyl 6-(spiro[5.5]undecan-3-yloxy)-2-naphthoate

Participants

Reaction Steps

A mixture of spiro[5.5]undecan-3-ol (0.999 g, 0.00593 mol), 6-hydroxy-naphthalene-2-carboxylic acid methyl ester (1.00 g, 0.00494 mol) and triphenylphosphine (1.56 g, 0.00593 mol) in toluene (10 mL, 0.1 mol) was heated to reflux. Diisopropyl azodicarboxylate (1.17 mL, 0.00593 mol) was then added dropwise and the resulting mixture was refluxed for 6 hours. The mixture was then diluted with dichloromethane and subjected to chromatographic purification with ethyl acetate:hexane (0:100 to 40:60) to give methyl 6-(spiro[5.5]undecan-3-yloxy)-2-naphthoate as a white solid. (1.09 g, 62%). 1H NMR (400 MHz, CDCl3) δ 8.52 (s, 1H), 8.01 (dd, J=8.7, 1.7 Hz, 1H), 7.84 (d, J=9.6 Hz, 1H), 7.72 (d, J=8.7 Hz, 1H), 7.17 (m, 2H), 4.45 (m, 1H), 3.97 (s, 3H), 1.93-1.28 (m, 18H).

Provenance & Evidence