Synthesis and properties of 2-amino-5-(3,5,6-trichloro-1,4-benzoquinon-2-yl)thiazoles |
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Authors: | M. F. Utinan R. É. Valter G. A. Karlivan É. É. Liepin'sh A. S. édzhinya |
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Affiliation: | (1) A. Ya. Pel'she Riga Polytechnical Institute, 226357 Riga;(2) Institute of Organic Synthesis, Academy of Sciences of the Latvian SSR, 226006 Riga |
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Abstract: | The reaction of thiourea of N-substituted thioureas with 2-(2-N,N-diethylaminoethenyl)-3,5,6-trichloro-1,4-benzoquinone leads, through the formation of 2,5-dihydroxy-3,4,6,7-tetrachlorocoumaran, to 2-amino-5-(2,5-dihydroxy-3,4,6-trichlorophenyl)thiazoles (which exist in the form of betaines), the oxidation of which leads to 2-amino-5-(3,5,6-trichloro-1,4-benzoquinon-2-yl)thiazoles.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 692–698, May, 1988. |
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