Acetic Acid → HCID 23338330, compound

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Reaction Steps

The compound 1-ethoxy-[1-(2,6,6-trimethyl-1-hydroxy-2-cyclohexen-1-yl)-3-methyl-4-penten-1-yn-3-oxy]ethane (9.5g) in acetic acid (40 ml) was heated at 55° for 11/2 hr and then taken to dryness "in vacuo" (45° at 0.5 mmHg), dissolved in hexane, and chromatographed on silica gel (400 g). Elution with hexane-ether mixtures (4:1 parts by volume and 3:1 parts by volume 500 ml cuts, 2 liters) yielded 1-(2,6,6-trimethyl-3-acetoxycyclohexen-1-yl)-3-methyl-4-penten-1-yn-3-ol (4.3g) bp 165° (0.09 mmHg).

Provenance & Evidence