Facile Synthesis of 3-Methylbenzene Oxide and 1-Methylbenzene Oxide, and 1H-NMR Data for Diels-Alder Adducts of Three Methylbenzene Oxides with 4-Phenyl-1,2,4-triazoline-3,5-dione.
作者:Kazuhiro NOJIMA、Chiho ISOGAMI、Masaaki HIROBE
DOI:10.1248/cpb.41.2106
日期:——
Diels-Alder reaction of methyl-substituted 1, 3-butadienes (1) with 1, 2-dibromoethylene gave dibromomethylcyclo-hexenes (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.
A plantgrowthregulator, theobroxide, which produces potato tubers under noninduced long-day conditions, was synthesized in four steps from dihydrotoluene.