Magnetic nanoparticle-supported eosin Y salt [SB-DABCO@eosin] as an efficient heterogeneous photocatalyst for the multi-component synthesis of chromeno[4,3- b]chromene in the presence of visible light

磁性纳米粒子负载的伊红Y盐[SB-DABCO@伊红]作为一种有效的非均相光催化剂，用于可见光下色烯[4,3-b]色烯的多组分合成