The reaction of<i>N,N</i>-dimethyldichloromethyleniminium chloride (phosgeniminium chloride) with 6-<i>N</i>-arylaminouracils. A new and convenient “one pot” synthesis of l,3-dimethyl-5- dimethylaminopyrimido[4,5-<i>b</i>]quinoline-(1<i>H</i>,3<i>H</i>)-2,4-diones, 1,3-dimethyl-5-chloropyrimido[4,5-<i>b</i>]quinoline-(1<i>H</i>,3<i>H</i>)-2,4-diones and 3-methyl-10-alkyl-5-chloropyrimido[4,5-<i>b</i>]quinoline-(3<i>H</i>,10<i>H</i>)-2,4-diones (3-methyl-10-alkyl-5-chloro-5-deazaflavins)
作者:Bruno Kokel
DOI:10.1002/jhet.5570310427
日期:1994.7
The 1,1,1-tricondensation of N,N-dimethyldichloromethyleniminium chloride (phosgeniminium chloride) with various 1,3-dimethyl-6-N-arylaminouracils and 3-methyl-6-N-(alkylaryl)aminouracils, which gives only 5-dimethylaminopyrimido[4,5-b]quinoline-2,4-diones when performed in the presence of triethylamine, affords also the corresponding 5-chloropyrimido[4,5-b]quinoline-2,4-diones, including 3-methyl
N,N-二甲基二氯甲基氯化亚铵(光气氯化亚胺)与各种1,3-二甲基-6- N-芳基氨基尿嘧啶和3-甲基-6- N-(烷基芳基)氨基尿嘧啶的1,1,1-三缩合反应当在三乙胺存在下进行时,-二甲基氨基嘧啶基[4,5 - b ]喹啉-2,4-二酮也可提供相应的5-氯嘧啶基[4,5- b]在没有碱存在的情况下,在适当的溶剂和温度反应条件下进行的]喹啉-2,4-二酮,包括3-甲基-10-烷基-5-氯-5-脱氮黄素。关于转化的选择性,已经发现这些反应条件特别取决于起始芳基氨基尿嘧啶取代基的性质和位置。