1,2-Ethanediamine, acetate (1:2) is used as a catalyst for the preparation of various organic compounds such as methanodibenzodioxocin flavonoids, and chromeno-?annulated cis-?fused pyrano[3,?4-?c]?benzopyran. It is also useful reagent for the synthesis of organic compunds such as arylmethyl nitrodihydroimidazopyridinium.