Synthesis of α,ω-Bis(pyrazol-3-yl)alkanes: I. 1,4-Bis(1-methyl- and 1-benzyl-5-chloro-1H-pyrazol-3-yl)- butanes from 1,1,10,10-Tetrachlorodeca-1,9-diene-3,8-dione and 1,1-Dimethyl- or Benzylhydrazine

摘要

First representatives of bis-2-chloro- and 2,2-dichlorovinyl ketones, 1,10-dichlorodeca-1,9-diene-3,8-dione and 1,l,10,10-tetrachlorodeca-1,9-diene-3,8-dione, were synthesized by reaction of hexanedioyl dichloride with acetylene and 1,1-dichloroethene, respectively, in the presence of AlCl3. 1,1,10,10-Tetrachloro-deca-1,9-diene-3,8-dione reacted with benzylhydrazine and 1,1-dimethylhydrazine to give 1,4-bis(1-benzyl-5-chloro-1H-pyrazol-3-yl)butane and 1,4-bis(5-chloro-1-methyl-1H-pyrazol-3-yl)butane, respectively.