Silylation of Pyridine, Picolines, and Quinoline with a Zinc Catalyst
Zn(OTf)2 (OTf- = trifluoromethanesulfonate) catalyzes the silylation of pyridine, 3-picoline, and quinoline to afford the silylated products, where the silyl groups are meta to the nitrogen. The isolated yields of the products range from 41 to 26%. The 2- and 4-picolines yielded the silylmethylpyridines, where the CH3 groups were silylated instead of the ring. The pyridine silylation can occur via two separate pathways, involving either a 1,4- or a 1,2-hydrosilylation of pyridine as the first step. A byproduct of the pyridine silylation is a head-to-tail dimerization of N-silyl-1,4-dihydropyridine to form a diazaditwistane molecule.
Department of Chemistry and Biochemistry
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UNI ScholarWorks, Rod Library, University of Northern Iowa
Prybil, Joshua W.; Wallace, Rodney; Warren, Alexandra; Klingman, Jordan; Vaillant, Romane; Hall, Michael B.; Yang, Xin; Brennessel, William W.; and Chin, Robert M., "Silylation of Pyridine, Picolines, and Quinoline with a Zinc Catalyst" (2020). Faculty Publications. 358.