Ketoketenegem-Dithiols in the Synthesis of Pyrimidine and Pyrazole Derivatives Pyrimidin- und Pyrazol-Derivate aus geminalen Dithiolen eines Ketoketens
作者:Salem E. Zayed、M. A. Hassan、Fatma M. Manhi、Ibrahim A. Hussin
DOI:10.1002/ardp.19893221116
日期:——
dimercaptal 1 prepared from 4‐acetylbiphenyl and CS21) is a subject of current interest. The reaction of α‐ketoketene‐S,S‐acetals and α‐cyanoketene‐S,S‐acetals with guanidine and thiourea to give pyrimidinederivatives was reported2,3).