A novel synthesis of some new benzoyl-substituted heterocycles from 2-benzoyl-3-phenylpent-2-ene-1,5-dinitrile
作者:Fathy M. Abdelrazek、Said A. Ghozlan、Farid A. Michael
DOI:10.1002/jhet.5570440110
日期:2007.1
2-Benzoyl-3-phenylpent-2-ene-1,5-dinitrile 1 undergoes bromination with N-bromosuccinimide (NBS) to afford the bromo derivative 2a. This bromo derivative undergoes reactions with sodium hydrogen sulfide, ethyl thioglycollate, hydroxylamine hydrochloride, hydrazines, cyanoacetamide, cyanacetohydrazide and urea derivatives to afford the thiophene 4, 4H-thiopyran 6, 4H-1,2-oxazine 8, 4H-pyridazines 10a
将2-苄基-3-苯基戊-2-烯-1,5-二腈1用N-溴琥珀酰亚胺(NBS)溴化,得到溴衍生物2a。此溴代衍生物经历与氢硫化钠反应,巯基乙酸乙酯,盐酸羟胺,肼,氰基乙酰胺,cyanacetohydrazide和尿素衍生物,得到噻吩4,4 ħ -噻喃6,4 ħ -1,2-恶嗪8,4 ħ -pyridazines 10a,b,吡啶15,吡咯并[1,2- b ]哒嗪17和N-取代的吡咯衍生物分别是图19a-c。