| Abstrakt: |
When 2,5-dihydroxy-3,4,6,7-tetrachloro-2,3-dihydrobenzo[b]furan interacts in acetone with thiosemicarbazide or its 4-methyl or 4-phenyl derivative, the respective products are 5-(2,5-dihydroxy-3,4,6-trichlorophenyl)-2-(isopropylidenehydrazino)thiazole and -3-R-2-(isopropylidenazino)thiazolines, respectively. It has been shown that hydrolysis of these compounds forms 3-amino-5-(2,5-dihydroxy-3,4,6-trichlorophenyl)-2-imino(or 2-R-imino)thiazolines. These products of hydrolysis and their predecessors are oxidized to the corresponding 2-hetaryl-substituted 3,5,6-trichloro-1,4-benzoquinones. |
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