Aminoacrylderivatives (1) and Br2/NH4SCN form iminothiazolinones 3 a-c and with chlorosulfonylisocyanate thiadiazinonedioxide 8. Reaction of 3 a with hydrazine yields disulfide 6. Compound 2 and PCl3 yield diazaphosphorines 7 a-c. By reaction of pyrimidinone 9 with NaOCl, HCl/H2O2 or Br2/NH4SCN dichloropyrimidinone 10, dichlorooxaziridine 16, and thiocyanate 13 are formed. Octahydroquinazolinone (17) and NaOCl or H2O2/HCl form chloroderivatives 18, 19 and 20, 18 with peracid oxaziridine 22. Compounds 16, 21, 22 and 13 with NaOCl form N-chloroderivatives 23, 24, 25 and 26 resp.
Study on condensation of N-aryl thioureas with 3-bromo-acetylacetone: Synthesis of aminothiazoles and iminodihydrothiazoles, and their in vitro antiproliferative activity on human cervical cancer cells
作者:Hai-Bo Shi、Shi-Jie Zhang、Yan-Fang Lin、Wei-Xiao Hu、Chao-Ming Cai
DOI:10.1002/jhet.602
日期:2011.9
The condensation of N‐aryl thioureas with 3‐bromo‐acetylacetone in neutral solvent acetone not only led to 5‐acetyl‐4‐methyl‐2‐(substituted anilino) thiazoles 3 but also 2‐imino‐3‐(substituted phenyl)‐4‐methyl‐5‐acetyl‐2,3‐dihydrothiazoles 4. Further study found that different reaction solvents displayed an important role toward the ratio of aminothiazoles 3 and iminodihydrothiazoles 4, and the reaction