The addition of Grignard reagents to the 1‐phenoxycarbonyl salt of 3‐benzyloxypyridine and
a catalytic amount of cuprous iodide afforded 4‐alkyl‐3‐benzyloxy‐1‐phenoxycarbonyl‐1, 4 …

Abstract N-Alkyl-2 (1H)-pyridones are prepared in high yield by the reaction of 2-
glycidoxypyridines with carboxylic acids, phenols or thiophenols. These reactions proceed …

Abstract N-Ethoxycarbonylpyridinium chloride (1) reacted with RCu· BF 3 at 4-position with
almost complete regioselectivity (better than 99%) to afford the corresponding 1, 4 …

Synthesis of substituted 4-pyridones and 4-aminopyridinium salts via a one-pot pyridine
synthesis - ScienceDirect Skip to main contentSkip to article Elsevier logo Journals & Books …

RCu· BF 3 reacted with 1-ethoxycarbonylpyridinium chloride at the 4-position with almost
complete regio-selectivity (> 99%) to afford the corresponding 1, 4-dihydropyridine …

A new pyridone dianion was prepared by halogen‐metal exchange from 5‐bromo‐1, 2‐
dihydro‐2‐oxo‐3‐pyrid‐inecarboxylic acid, t‐butyl ester and two equivalents of n …

The key compound ethyl 2, 6-dibromopyridine-4-carboxylate was prepared in two steps
starting from the commercially available citrazinic acid. By using the Stille coupling reaction …

-- In the presence of a catalytic amount of cuprous iodide, the addition of Grignard reagents
to the 1-phenoxycarbonyl salts of 3-halopyridines gives 4-alkyl-3-halo-l-phenoxycarbonyl-l …

3, 5-Diacyl-4-phenyl-1, 4-dihydropyridines have been synthesized via a regio-and
chemoselective addition of Ph2Cu (CN) Li2 to β-substituted N-alkylpyridinium salts, followed …

Nt-Butyldimethylsilylpyridinium triflate 2 reacted with Grignard reagents at 4-position with
almost complete regioselectivity (> 99%) to afford the corresponding 1, 4-dihydropyridine …