1-Butanol → 7-butoxy-3-butyl-5-methyl-3H-imidazo[4,5-b]pyridine-6-carboxylic acid, ethyl ester

反応式

[Na].[CH2:2]([OH:6])[CH2:3][CH2:4][CH3:5].[CH2:7]([N:11]1[C:15]2=[N:16][C:17]([CH3:26])=[C:18]([C:21]([O:23][CH2:24][CH3:25])=[O:22])[C:19](Cl)=[C:14]2[N:13]=[CH:12]1)[CH2:8][CH2:9][CH3:10]>C1C=CC=CC=1>[CH2:2]([O:6][C:19]1[C:18]([C:21]([O:23][CH2:24][CH3:25])=[O:22])=[C:17]([CH3:26])[N:16]=[C:15]2[N:11]([CH2:7][CH2:8][CH2:9][CH3:10])[CH:12]=[N:13][C:14]=12)[CH2:3][CH2:4][CH3:5]

参加物

実験手順

0.03 g. of sodium and 0.8 g. of n-butyl alcohol are refluxed for 5 hours in 50 ml. of dry benzene. After this time, 3 g. of 3-butyl-7-chloro-5-methyl-3H-imidazo[ 4,5-b]-pyridine-6-carboxylic acid, ethyl ester obtained in Example 3 c are added and the mixture is refluxed for 12 hours. After the inorganic precipitate has been filtered off, the solvent is removed in vacuo and the residue distilled to obtain 7-butoxy-3-butyl-5-methyl-3H-imidazo[4,5-b]pyridine-6-carboxylic acid, ethyl ester, b.p. 210°-220° /0.01. Yield 2.1 g. (66%).