p-Toluenesulfonic acid → HCID 19011014, compound

Participants

Reaction Steps

1,5,6,7,8,8a-Hexahydro-7,8-(dimethylmethylenedioxy)-6-methoxymethoxy-3H-2-benzopyran-3-ol (3.8 mg) was dissolved in 0.6 ml of dry methanol, and a catalytic amount of p-toluenesulfonic acid was added at room temperature. After the mixture was stirred at room temperature for 2 hours, triethylamine was added, and concentrated with water cooling under reduced pressure. The obtained residue was purified through a short silica gel column to provide 1.3 mg of 1,5,6,7,8,8a-hexahydro-6-methoxymethoxy-3-methoxy-3H-2-benzopyran-7,8-diol having the following properties (yield 68%).

Provenance & Evidence