Tetrahedron Letters p. 3935 - 3936 (1982)
Update date:2022-09-26
Topics:
Akiba, Kin-ya
Iseki, Yuji
Wada, Makoto
N-t-Butyldimethylsilylpyridinium triflate (2) reacted with Grignard reagents at 4-position with almost complete regioselectivity (<*>99percent) to afford the corresponding 1,4-dihydropyridine derivatives (3), which are easily oxidized by oxygen to give 4-substituted pyridines (4: 58-70percent).
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Doi:10.1021/ja00529a076
(1980)Doi:10.1016/j.tet.2016.11.054
(2017)Doi:10.1021/acs.joc.8b02909
(2019)Doi:10.1039/P19810001006
(1981)Doi:10.1002/cssc.201300484
(2013)Doi:10.1021/ic00133a082
(1982)
