Synthesis of pyrimido[1,6-a]quinoxalines via intermolecular trapping of thermally generated acyl(quinoxalin-2-yl)ketenes by Schiff bases

Svetlana O. Kasatkina, Ekaterina E. Stepanova, Maksim V. Dmitriev, Ivan G. Mokrushin and Andrey N. Maslivets

Beilstein J. Org. Chem. 2018, 14, 1734–1742. doi:10.3762/bjoc.14.147

Supporting Information

Supporting Information File 1: Experimental details, copies of 1H and 13C NMR spectra of pyrimido[1,6-a]quinoxalines 3an, STA plots of PQT 1ah and X-ray crystal structure details of compounds 3g,j.
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