Synthesis, X-ray characterization and theoretical study of 3 a ,6:7,9 a -diepoxybenzo[ de ]isoquinoline derivatives: on the importance of F⋯O interactions

GIL, DIEGO M.; SINELSHCHIKOVA, ANNA A.; FRONTERA, ANTONIO; GRUDOVA, MARIYA V.; NIKITINA, EUGENIYA V.; KLETSKOV, ALEXEY V.; KHRUSTALEV, VICTOR N.; GRIGORIEV, MIKHAIL S.; ZUBKOV, FEDOR I.

NEW JOURNAL OF CHEMISTRY

ROYAL SOC CHEMISTRY

Año: 2020 vol. 44 p. 20167 - 20180

1144-0546

The synthesis, X-ray characterization and Hirshfeld surface analysis of a series of tetrahydro-diepoxybenzo[de]isoquinoline derivatives obtained by the tandem [4+2] cycloaddition between perfluorobut-2-yne dienophile (F3C?C[triple bond, length as m-dash]C?CF3) and a row of N,N-bis(furan-2-ylmethyl)-4-R-benzenesulfonamides (bis-dienes, R = Me, F, Cl, Br, I) are reported in this manuscript. The implementation of kinetic/thermodynamic control allowed us to obtain both ?pincer?- and ?domino?-type adducts in good/moderate yields. In the solid state, most of the pincer adducts form self-assembled dimers (R = Me, Cl, Br, I) and, contrariwise, the domino adducts form 1D supramolecular chains, which are described in detail herein. Remarkably, in the self-assembled dimers, bifurcated halogen bonds involving one fluorine atom of the CF3 group and both O-atoms of sulfonamide are formed, which have been analyzed using DFT calculations, and the QTAIM and NCIplot computational tools.