中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4,7-二甲基-1,3-苯并二氧戊环 | 4,7-Dimethyl-1,3-benzdioxol | 74131-59-2 | C9H10O2 | 150.177 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 4,7-Dimethyl-5-hydroxy-1,3-benzdioxol | 88631-90-7 | C9H10O3 | 166.177 |
We describe the preparation of alkylsubst. benzodioxoles, -dioxane, -dioxepine and dioxocine 2a-e.
The can be subjected to a Vilsmeyer-formylation, yielding the aldehydes 3 a-e.
Treatment of 3 a-e with performic acid leads to the phenoles 4 a-e in a Baeyer-Villiger-Oxidation. Using Zincchloride as a catalyst the chromanes 5 a-j can be obtained by reaction of 4 a-e with either prenylbromide or phthylbromide.