No abstract

The 6,13-pentacenequinone loaded TiO2 catalyst was successfully synthesized via simple wet-impregnation. The highest apparent rate constant was observed among the prepared catalysts is 5.2 × 10−2 min−1 using a PQ/TiO2 catalyst having 0.2 wt% PQ.

Experimental procedures, characterization data, and copies of 1 H and 13 C NMR spectra (PDF)Accession Codes CCDC 1862119−1862121 contain the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk

This work reports new (4 + 2)-annulations of α-alkyl vinylgold carbenes with benzisoxazoles to afford 3,4-dihydroquinoline derivatives with high anti-stereoselectivity.