
Chemical and Pharmaceutical Bulletin p. 2106 - 2108 (1993)
Update date:2022-08-02
Topics:
Nojima
Isogami
Hirobe
Diels-Alder reaction of methyl-substituted 1,3-butadienes (1) with 1,2-dibromoethylene gave dibromomethylcyclohexenes (2), which were subjected to epoxidation, followed by dehydrobromination of the resultant dibromo oxides (3) to afford 3-methylbenzene oxide (4a) and 1-methylbenzene oxide (4b). However, 4-methylbenzene oxide (4c) could not be obtained in this way.
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