Synthesis of Novel Tricyclic Aryltriazole‐3‐Thione Compounds
摘要:
A new synthetic protocol has been developed to provide entry into a series of novel tricyclic aryltriazole-3-thiones analogs. The classical reaction conditions of subjecting an arylhydrazide with thiophosgene to form the thioisocyanate intermediate and ultimately the corresponding aryltriazole-3-thione framework were not successful. However, using a combination of carbon disulfide and 1,8-diazabicyclo[5.4.0]undec7-ene (DBU) to form the thioisocyanate intermediate was found to produce the novel tricyclic aryltriazole-3-thiones (5, 8a-c) in good yield.
Verfahren zur Kernchlorierung von aromatischen Kohlenwasserstoffen
申请人:BAYER AG
公开号:EP0368063A1
公开(公告)日:1990-05-16
Aromatische Kohlenwasserstoffe, die durch geradkettiges oder verzweigtes C₁-C₁₂-Alkyl oder durch C₃-C₈-Cycloalkyl monosubstituiert sind, können in Gegenwart von Friedel-Crafts-Katalysatoren in flüssiger Phase im aromatischen Kern chloriert werden, wenn man als Co-Katalysatoren cyclische benzokondensierte Imine oder Benzo[f]-1,4-thiazepine einsetzt. Hierbei kann ein erhöhter Anteil an p-Isomeren erhalten werden.
Bose,A.K. et al., Journal of the Chemical Society. Perkin transactions I, 1976, p. 2343 - 2348
作者:Bose,A.K. et al.
DOI:——
日期:——
Synthesis of Novel Tricyclic Aryltriazole‐3‐Thione Compounds
作者:Cuiman Cai、Janet S. Plummer、David Connor、Daniel D. Holsworth、Jeremy J. Edmunds
DOI:10.1081/scc-200048912
日期:2005.1.1
A new synthetic protocol has been developed to provide entry into a series of novel tricyclic aryltriazole-3-thiones analogs. The classical reaction conditions of subjecting an arylhydrazide with thiophosgene to form the thioisocyanate intermediate and ultimately the corresponding aryltriazole-3-thione framework were not successful. However, using a combination of carbon disulfide and 1,8-diazabicyclo[5.4.0]undec7-ene (DBU) to form the thioisocyanate intermediate was found to produce the novel tricyclic aryltriazole-3-thiones (5, 8a-c) in good yield.