Water → HCID 21242323, compound

Participants

Reaction Steps

A solution of 1 g (0.0045 mol) of (2Z,6Z)-3,7,11-trimethyl-2,6,10-dodecatrien-1-ol in 32 ml of 3,4-dihydro-2H-pyran is treated at 0° with 91 mg of p-toluenesulfonic acid. The solution is stirred at the same temperature for 2 hours under argon. After the addition of 100 ml of water the mixture is extracted with ether. The organic phase is washed with sodium bicarbonate solution. After drying and removing the solvent the residue is chromatographed on silica gel with ether-hexane 1:1. There is obtained tetrahydro-2-[[(2Z,6Z)-3,7,11-trimethyl-2,6,10-dodecatrienyl]oxy]-2H-pyran which has the following bands in the IR spectrum: 1668 cm-1, 1444 cm-1, 1378 cm-1, 1118 cm-1, 1075 cm-1, 1023 cm-1.

Provenance & Evidence