Sodium Methoxide → HCID 178450819、化合物

反応式

Cl.[Cl:2][C:3]1[C:8]([Cl:9])=[CH:7][CH:6]=[CH:5][C:4]=1[CH2:10][C:11]([NH2:13])=[NH:12].C[O:15][C:16](=O)/[C:17](/[O:27][CH2:28][C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)=[C:18](\O)/[C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20].C[O-].[Na+]>CO>[C:22]([O:21][C:19]([C:18]1[C:17]([O:27][CH2:28][C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=2)=[C:16]([OH:15])[N:13]=[C:11]([CH2:10][C:4]2[CH:5]=[CH:6][CH:7]=[C:8]([Cl:9])[C:3]=2[Cl:2])[N:12]=1)=[O:20])([CH3:25])([CH3:23])[CH3:24]

参加物

実験手順

To a stirred solution of 2-(2,3-dichlorophenyl)-acetamidine hydrochloride salt (129) (10 g, 41.84 mmol) and (E)-2-benzyloxy-3-hydroxy-but-2-enedioic acid 4-tert-butyl ester 1-methyl ester (4) (19.33 g, 62.76 mmol) in methanol (300 mL) was added sodium methoxide (6.7 g, 125.52 mmol) at 0° C. Then the reaction mixture was allowed to warm to room temperature, and was stirred for 16 h. After completion of the reaction, it was quenched with 1N HCl, the methanol was evaporated and water was added. The mixture was extracted with ethyl acetate and the separated organic part was dried over sodium sulfate and concentrated under reduced pressure to get a crude product, which was purified by a normal silica column using 30% ethyl acetate in hexane to get 5-benzyloxy-2-(2,3-dichlorobenzyl)-6-hydroxypyrimidine-4-carboxylic acid tert-butyl ester (130) (10 g, 57.8%) as a brown solid.