27876-19-3Relevant articles and documents
Synthesis and utility of dihydropyridine boronic esters
Panda, Santanu,Coffin, Aaron,Nguyen, Q. Nhu,Tantillo, Dean J.,Ready, Joseph M.
supporting information, p. 2205 - 2209 (2016/02/18)
When activated by an acylating agent, pyridine boronic esters react with organometallic reagents to form a dihydropyridine boronic ester. This intermediate allows access to a number of valuable substituted pyridine, dihydropyridine, and piperidine products.
A NOVEL 1,2-ALKYL MIGRATION OF TRIALKYL(4-PYRIDYL)BORATES
Ishikura, Minoru,Ohta, Tsukasa,Terashima, Masanao
, p. 2793 - 2796 (2007/10/02)
The reaction of lithium trialkyl(4-pyridyl)borates with Lewis acids or acylating agents produced 4-alkylpyridines via 1,2-alkyl migration from boron to pyridine ring.
FACILE SYNTHESIS OF 4-SUBSTITUTED PYRIDINES USING GRIGNARD REAGENTS
Akiba, Kin-ya,Iseki, Yuji,Wada, Makoto
, p. 3935 - 3936 (2007/10/02)
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).