Reaction of 2-dimethylaminomethylene-1,3-diones with dinucleophiles. III. Synthesis of 5-acylpyrimidines and 7,8-dihydroquinazolin-5(6<i>H</i>
)-ones
作者:Luisa Mosti、Giulia Menozzi、Pietro Schenone
DOI:10.1002/jhet.5570200328
日期:1983.5
The reaction of open-chain and cyclohexane sym-2-dimethylaminomethylene-1,3-diones with amidines and guanidine in refluxing ethanol gave, generally in good yields, a series of 5-acylpyrimidines and 7,8-dihydroquinazolin-5(6H)-ones, respectively. With formamidine (and in part acetamidine), 2-formylimino-1,3-diones were formed in general, as sole products or mixtures with the corresponding pyrimidines
在回流的乙醇中,开环和环己烷对称的-2-二甲基氨基亚甲基-1,3-二酮与am和胍的反应通常以良好的收率得到一系列的5-酰基嘧啶和7,8-二氢喹唑啉-5(6 H)-一个。与甲am(和部分为乙am)一起,通常形成2-甲酰氨基-1,3-二酮,其为单独的产物或与相应的嘧啶或二氢喹唑啉酮的混合物。