- Synthesis and solvatochromic properties of 5-dicyanovinyl- and 5-tricyanovinyl-substituted 2-amino-thiazoles and 2-amino-thiophenes
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Starting from 2-morpholinothiazoles 6 and 2-morpholinothiophenes 7 and following known routes several 5-dicyanovinyl and 5-tricyanovinyl-substituted derivatives 10 - 13 have been prepared and their solvatochromic properties estimated.
- Eckert, Katrin,Mokry, Cornelia,Schroeder, Anke,Hartmann, Horst
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- Preparation and properties of 2-dialkylamino-5-haloacetyl-thiazoles and 4-(2-dialkylamino-5-thiazolyl)-thiazoles
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By the reaction of N-acylthioureas 7 with 1,3-dichloroacetone9 2-dialkylamino-5-chloroacetyl-thiazoles 11 are avialable. These compounds react with thioureas or arylthioamides under heterocyclisation to give bis-(2-dialkylamino-5-thiazolyl)-ketones 13, 2-aryl-4-(2-dialkylamino-5-thiazolyl)-thiazoles 14, or 2-dialkylamino-4-(2-dialkylamino-5-thiazolyl)-thiazoles 15, resp., from which the last-mentioned compound exhibit a high reactivity towards several electrophilic reagents. Thus, deeply colored cyanovinyl, arylazo, and arylmethine substituted bisthiazole dyes 17, 18, and 19, resp., have been formed. Johann Ambrosius Barth 1998.
- Mokry, Cornelia,Hartmann, Horst
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p. 375 - 380
(2007/10/03)
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