Ring transformation of 5-amino (or acylamino)-6-hydroxy (or benzoyloxy)methylpyrimidin-4(3<i>H</i>)-ones into 1<i>H</i>-imidazoles
作者:Taisei Ueda、Satoko Asai、Khoji Oiji、Shin-Ichi Nagai、Akito Nagatsu、Jinsaku Sakakibara
DOI:10.1002/jhet.5570340310
日期:1997.5
Treatment of 5-acylamino-6-hydroxy (or benzoyloxy)methyl-3-phenylpyrimidin-4(3H)-one 5,10 with 5% aqueous sodium hydroxide in ethanol gave 2-alkyl-5-hydroxymethyl-4-phenylcarbamoyl-1H-imidazoles 7,11. Oxidation of 5-amino-6-benzoyloxymethyl-3-phenylpyrimidin-4(3H)-one 9 in the presence of copper(II) chloride in alcohol gave 2-alkoxy-5-alkoxymethyl-4-phenylcarbamoyl-1H-imidazoles 12a,b accompanied by
用5%氢氧化钠水溶液在乙醇中处理5-酰基氨基-6-羟基(或苯甲酰氧基)甲基-3-苯基嘧啶-4(3 H)-1 5,10,得到2-烷基-5-羟基甲基-4-苯基氨基甲酰基- 1 H-咪唑7,11。在乙醇中存在氯化铜(II)的情况下,将5-氨基-6-苯甲酰氧基甲基-3-苯基嘧啶-4(3 H)-1 9氧化,得到2-烷氧基-5-烷氧基甲基-4-苯基氨基甲酰基-1 H-咪唑12a,b伴随有5-氨基-6-烷氧基甲基-3-苯基嘧啶-4(3 H)-ones 13a,b。