Abstract
1-Benzyl-2,4-diphenylpyridiniums with benzaldehydes give oxazolopyridines which are dehydrated to 1-styryl derivatives. On pyrolysis the 1-styryl-1,2-dihydropyridine 21a gave 2,4,6-triphenylpyridine and m-chlorostyrene by a ring-enlargement-ring-contraction mechanism: this is a general reaction of 1-vinyl-1,2-dihydropyridines. © 1982, American Chemical Society. All rights reserved.
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CITATION STYLE
Katritzky, A. R., Chermprapai, A., Patel, R. C., Tarraga-Tomas, A., Katritzky, A. R., Chermprapai, A., … Tarraga-Tomas, A. (1982). Pyridinium Ylides Derived from Pyryliums and Amines and a Novel Rearrangement of 1-Vinyl-1,2-dihydropyridines. Journal of Organic Chemistry, 47(3), 492–497. https://doi.org/10.1021/jo00342a024
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