A Practical Approach Towards Synthesis of Octahydroquinazolinone Derivatives in Water
作者:Hai-Xia Lin、Xiao-Zhen Xie、Xiao-Hong Wang、Bin He
DOI:10.2174/157017809789869555
日期:2009.10.1
A simple, efficient and green procedure has been developed for the synthesis of octahydroquinazolinone derivatives by Biginelli-type three-component cyclocondensation reactions of cyclic β-diketones, aldehydes and (thio)urea with p-TsOH catalysis in water.
Ionic liquid: an efficient and recyclable medium for the synthesis of octahydroquinazolinone and biscoumarin derivatives
作者:Jitender M. Khurana、Sanjay Kumar
DOI:10.1007/s00706-010-0306-4
日期:2010.5
A facile and environmentally benign procedure for the synthesis of octahydroquinazolinone and biscoumarin derivatives in ionic liquids is reported. Octahydroquinazolinones were synthesized in the presence of trimethylsilyl chloride (TMSCl) while the synthesis of biscoumarins required no additive. The ability to reuse the ionic liquid, the high yields, and ease of purification are the important features of this process.
Chemoselective Multicomponent Condensation of 1,3-Cyclohexanedione, Urea or Thiourea with Aldehydes: One-Pot Synthesis of Two Families of Fused Heterobicyclic and Spiro-fused Heterobicyclic Aliphatic Rings