Studies on quinazoline chemistry. 5.* Synthesis of 3,4-dihydroquinazolines with functional substituents at C-2 atom and their alkylation reactions
作者:E. V. Gromachevskaya、E. A. Kaigorodova、K. S. Pushkareva、G. D. Krapivin
DOI:10.1007/s10593-013-1163-y
日期:2013.1
4-dihydroquinazolines by the reaction of o-aminophenyldiphenylcarbinol (APC) with various nitriles. The reaction of APC with substituted 5-bromo-3-cyano-2(1H)-pyridones leads to the formation of derivatives of two products: 3,4-dihydroquinazolines and 4H-3,1-benzoxazines. The alkylation of 3,4-dihydroquinazolines using dimethyl sulfate proceeds through N,N-dimethylation. The structure of these products is a function
据报道,通过邻氨基苯基二苯基甲醇(APC)与各种腈的反应,可以合成一系列新的2-取代的4,4-二苯基-3,4-二氢喹唑啉系列。APC与取代的5-溴-3-氰基-2(1H)-吡啶酮的反应导致形成两种产物的衍生物:3,4-二氢喹唑啉和4H-3,1-苯并恶嗪。使用硫酸二甲酯使3,4-二氢喹唑啉烷基化通过N,N-二甲基化进行。这些产物的结构取决于杂环的C-2原子上的取代基的性质。