2-Methylbenzenesulfonic acid → HCID 20040641, compound

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Reaction Steps

16.6 Parts of 2-t-butylhydroquinone, 14.2 parts of methyl 5-methyl-hex-5-enoate and 0.5 part of p.toluene sulphonic acid are heated on a steam-bath for 24 hours. The reaction mixture is then taken up in ether, washed with dilute sodium hydroxide solution, and then with water. After removing ether and lower boilers, distillation gave methyl 5-(4-t-butyl-2,5-dihydroxy-phenyl)-5-methyl-hexanoate, [formula (124)], b0.3 186°-210° C. This fraction after crystallisation from petroleum ether, had a m.p. 136°-139° C. and the following percentage composition by weight:

Provenance & Evidence