%0 Journal Article %T Amberlyst 15 Catalyzed Prenylation of Phenols: One-Step Synthesis of Benzopyrans %A G. P. Kalena %A A. Jain %A A. Banerji %J Molecules %D 1997 %I MDPI AG %R 10.3390/20700100 %X A convenient one-step synthesis of 2,2-dimethylchromans and chromenes using Amberlyst 15 as a catalyst is described. %K Amberlyst 15 %K 2 %K 2-dimethylbenzopyrans %K nuclear isoprenylation %K eupatoriochromene %K calanolides %U http://www.mdpi.com/1420-3049/2/7/100