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n-Butyl by-products in the syntheses of 2-(1- and 2-naphthyl)pyridines via lithiation |
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| Authors: | L H Klemm William Burel Daniel Purtzer |
| Abstract: | By-products in the syntheses of 2-(1- and 2-naphthyl)pyridines by successive treatments of 1- and 2-bromonaphthalenes with (a) n-butyllithium in ether and (b) pyridine are identified as 5-butyl-2-(1-naphthyl)pyridine and, tentatively, 5-butyl-2-(2-naphthyl)pyridine, respectively. It is proposed that these by-products result from reaction of intermediate compounds 1-lithio-2-naphthyl-1,2-dihydropyridines and 1-bromobutane. |
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