Dehydrolinalool → 2H-Pyran, 2-ethynyltetrahydro-2,6,6-trimethyl-

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Reaction Steps

A solution of 13.82 g (0.09 mol) of dehydrolinalool (II, R1, R2 and R3 =methyl) in 200 ml of methyl tert.butyl ether was added to 28.35 g of Zeocat® Z6-05-02 and stirred for 30 min. The reaction mixture was evaporated (40° C., 300 mbar) and the resulting solid was subjected to microwave irradiation (600 W power for 4 s). The product was separated from the solid by dissolving in 300 ml acetone and evaporating the solvent in vacuo. The crude 2-ethinyl-tetrahydro-2,6,6-trimethylpyran was obtained in 13.30 g (96.2%) yield as yellowish liquid.

Provenance & Evidence