作者:K. Kieć-Kononowicz、A. Zejc、M. MikoŁajczyk、A. Zatorski、J. Karolak-Wojciechowska、M.W. Wieczorek
DOI:10.1016/0040-4020(80)80063-9
日期:1980.1
The reaction between the potassium salt of 5,5-diphenyl-2-thiohydantoin (1) and 1,3-dibromopropane carried out in DME under anhydrous conditions has been found to give two isomeric diphenylimidazothiazines 2 and 3. When the reaction of 1 with 1,3-dibromopropane was performed in protic solvents (EtOH, HOH, NaOH) 2 and 3-(3-mercaptopropyl) - 5,5 - diphenylthiohydantoin (4) were formed. The latter is
发现在无水条件下于DME中进行的5,5-二苯基-2-硫代乙内酰脲(1)的钾盐与1,3-二溴丙烷之间的反应产生了两种异构的二苯基咪唑并噻嗪2和3。当1与1,3-二溴丙烷的反应在质子溶剂(EtOH,HOH,NaOH)2中进行时,形成3-(3-巯基丙基)-5,5-二苯硫基乙内酰脲(4)。后者是3在反应条件下发生水解的产物。2,3,4,5-四氢-6,6-二苯基咪唑[2,1-b]-噻嗪-7(6H)-一(2)在空间群P2 1中结晶/ n,其中a = 10.812(3),b = 14.905(7),c = 9.885(4),β= 104.91(2)°。在5元环2是平面的,而6元噻嗪环采用沙发构象。