
Journal of Organic Chemistry p. 492 - 497 (1982)
Update date:2022-08-03
Topics:
Katritzky, Alan R.
Chermprapai, Amornsri
Patel, Ranjan C.
Tarraga-Tomas, Alberto
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.
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(1982)Doi:10.1007/BF00633228
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(1981)Doi:10.1007/BF00506462
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(2004)