Correction to: Catalysis Letters (2018) 148:857–872 https://doi.org/10.1007/s10562-018-2311-x

An error appeared in our paper entitled “Synthesis of Polyhydroquinoline, 2,3-Dihydroquinazolin-4(1H)-one, Sulfide and Sulfoxide Derivatives Catalyzed by New Copper Complex Supported on MCM-41” published in Catalysis Letters. We used the wrong version of Fig. 3 in the article. The corrected Fig. 3 is shown below.

Fig. 3
figure 3

The TGA diagrams of MCM-41 (red) and MCM-41@Serine@Cu(II) (blue)