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ChemicalBook CAS DataBase List 5-Methyl-6-oxo-1,6-dihydro-pyridine-3-carboxylic acid

5-Methyl-6-oxo-1,6-dihydro-pyridine-3-carboxylic acid synthesis

1synthesis methods
-

Yield:66909-27-1 61%

Reaction Conditions:

Stage #1: 5-bromo-3-methylpyridin-2(1H)-onewith n-butyllithium in tetrahydrofuran;hexane at -78; for 0.5 h;
Stage #2: carbon dioxide in tetrahydrofuran;hexane at -78 - 20;
Stage #3: with hydrogenchloride;water

References:

Ando, Makoto;Sato, Nagaaki;Nagase, Tsuyoshi;Nagai, Keita;Ishikawa, Shiho;Takahashi, Hirobumi;Ohtake, Norikazu;Ito, Junko;Hirayama, Mioko;Mitobe, Yuko;Iwaasa, Hisashi;Gomori, Akira;Matsushita, Hiroko;Tadano, Kiyoshi;Fujino, Naoko;Tanaka, Sachiko;Ohe, Tomoyuki;Ishihara, Akane;Kanatani, Akio;Fukami, Takehiro [Bioorganic and Medicinal Chemistry,2009,vol. 17,# 16,p. 6106 - 6122] Location in patent:experimental part