Ethanone, 1-(2,6,6-trimethyl-3-cyclohexen-1-yl)- → Ethanone, 1-(2,6,6-trimethyl-3-cyclohexen-1-yl)-

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Reaction Steps

In a 500-ml four-necked flask equipped with a thermometer, a condenser and a stirrer, placed were 2,6,6-trimethyl-3-cyclohexenyl methyl ketone (100 g) synthesized in Referential Example 1, tetraethyleneglycol monomethyl ether (150 ml), potassium t-butoxide (25 g) and tetra-n-butylammonium bromide (2 g). Under stirring, they were reacted at 175° C. for 4 hours. The reaction mixture at this time was sampled and analyzed by gas chromatography, resulting in that the content of trans-2,6,6-trimethyl-3-cyclohexenyl methyl ketone (1a′) was 12%, while those of 2,6,6-trimethyl-2-cyclohexenyl methyl ketone (1b) and 2,6,6-trimethyl-1-cyclohexenyl methyl ketone (1c) produced by the above reaction were 61% and 27%, respectively.

Provenance & Evidence