Abstract
Several tris or bis(o-aminobenzenethiolato)metal complexes, where metals include ruthenium, rhodium, rhenium, molybdenum, platinum, and palladium, were synthesized. They were used as precursors to active metal sulfide catalysts for dehydrogenative oligomerization of 1,2,3,4-tetrahydroquinoline (THQ). The conversion of metal complex precursors to the corresponding metal sulfides was carried outin situ in the THQ solution at 210–270 °C. These metal sulfides polymerized THQ to quinoline oligomers in 71–95% yield. We also observed a periodic trend on the activity of these catalysts showing a maximum oligomer yield with ruthenium sulfide.
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Chiang, L.Y., Coyle, C.L. & Chianelli, R.R. Dehydrogenative oligomerization reactivity of transition metal sulfides derived from their tris or bis(o-aminobenzenethiolato)metal complexes. Catal Lett 8, 125–129 (1991). https://doi.org/10.1007/BF00764108
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DOI: https://doi.org/10.1007/BF00764108