فهرست مقالات Dihydropyrano[c]chromen دسترسی آزاد مقاله صفحه چکیده متن کامل 1 - A new method for synthesis of tetrahydrobenzo[b]pyrans and dihydropyrano[c]chromenes using p-dodecylbenzenesulfonic acid as catalyst in water Enayatollah Sheikhhosseini Dadkhoda Ghazanfari Vida Nezamabadi