三种新颖的环系统,即噻吩并[3,4- d ] -1,2,4-三唑并[1,5- a ]嘧啶,噻吩并[3,4- e ] -1,2,4-三唑并[ 1,5-一个]嘧啶和噻吩并[3,2- d〕-1,2,4-三唑并〔1,5-一个]嘧啶合成。使用为此目的制备的模型化合物,借助其uv和cmr光谱证明了所得化合物的结构。
On triazoles XI 11For Part X. see K. Esses-Reiter and J. Reiter, J. Heterocyclic Chem ( in press). structure elucidation of isomeric 1,2,4-triazolopyrimidinones
作者:József Reiter、László Pongó、Péter Dyortsák
DOI:10.1016/s0040-4020(01)81656-2
日期:——
The structure of Isomeric 3 – 6 type triazolo-pyrimidinones and their N-methylated and N-benzylat-ed derivatives was elucidated. In spite of the good agreement between the carbonyl bonds of derivatives 3 – 6 (R1= CH3, R=H, Q=SCH3) and their structure the IR method did not prove to be characteristic in general for the above structures. In contrast to the results reported previously it was found that