
Tetrahedron Letters p. 5269 - 5272 (1983)
Update date:2022-08-03
Topics:
Akiba, Kin-ya
Nishihara, Yoshihiro
Wada, Makoto
Trimethylsilyl enol ethers (1) reacted with 1-ethoxycarbonylpyridinium chloride (3) at 4-position with high regioselectivity to afford 1-ethoxycarbonyl-4-(2-oxoalkyl)-1,4-dihydropyridines (4) in 42-87percent yields.When 2,2,2-trichloroethyl chloroformate
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