3,4-Dihydro-2-phenyl-2H-pyranopyridines. Novel Aza Analogs of Flavans
Complementary approaches to the synthesis of the title compounds 1 are described.Metallation of 3,5-dibromo-2-methoxypyridine (5b) by bromine/lithium exchange gave selectively the 3-lithio intermediate 6 which was trapped with substituted cinnamaldehydes
Bargar, T. M.,Wilson, T.,Daniel, J. K.
p. 1583 - 1592
(2007/10/02)
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