Synthesis of 2-[mercapto(cyano)methylene]-1,2,3,4-tetrahydro-quinazolin-4-ones and 2-amino-4-methylpyrazolo-[1,5-<i>a</i>]quinazolin-5(4<i>H</i>)-one
作者:Judit Fleischer、Kálmán Takács、István Hermecz
DOI:10.1002/jhet.5570340426
日期:1997.7
A series of 2-[mercapto(cyano)methylene]-1,2,3,4-tetrahydroquinazolin-4-ones and 2-amino-4-methylpyrazolo[1,5-a]quinazolin-5(4H)-one were prepared from 2-cyanomethylquinazolin-4(3H)-ones via α-bromo derivatives 4 and amide oxime 8, respectively. The new compounds have been characterized by elemental analyses and 1H-nmr, in some cases by ir and 13C-nmr investigations.
一系列2- [巯基(氰基)亚甲基] -1,2,3,4-四氢喹唑啉-4-酮和2-氨基-4-甲基吡唑并[1,5-a]喹唑啉-5(4 H)-酮由2-氰基甲基喹唑啉-4 (3 H)-一经α-溴衍生物4和酰胺肟8制备。这些新化合物已通过元素分析和1 H-nmr表征,在某些情况下还通过了ir和13 C-nmr研究。