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Condensed heterocycles with a thiazole ring. 15. Dyes based on thiazolo[3,4-b][1,2,4]triazine

✍ Scribed by Yu. P. Kovtun; N. N. Romanov; A. D. Kachkovskii


Publisher
Springer US
Year
1988
Tongue
English
Weight
559 KB
Volume
24
Category
Article
ISSN
0009-3122

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📜 SIMILAR VOLUMES


Condensed heterocycles with a thiazole r
✍ Yu. P. Kovtun; N. N. Romanov 📂 Article 📅 1988 🏛 Springer US 🌐 English ⚖ 335 KB

The reaction of 2-(=-chlorobenzyl)pyridines with thioacetamide gave 3-methyll-arylthiazolo [3,4-a]pyridinium salts, which form cyanines. It was established that the thiazolopyridinium ring in the dyes has high electron-donor character and a great effective length. Quaternary salts of 2-methylthiazo

Simple and condensed β-lactams. Part 29.
✍ Attila Sápi; József Fetter; Károly Lempert; Mária Kajtár-Peredy; Gábor Czira 📂 Article 📅 1997 🏛 Elsevier Science 🌐 French ⚖ 441 KB

4-[(2RS,3R,S)-3-Hydroxy-(lb) and -3-(4-chlomphenoxy)-l-(4-methoxyphenyl)-4-oxoazetidin-2-yl]thiazol-2(3H)-one (16b) were synthesised. While the former was smoothly rearranged into (5RA•-5-hydr•xy-7-(4-meth•xypheny•)-••5-dihydr•thiaz•••[3.4-a•pyrazine-3•6(7H)-di•ne (7b) on treatment with Na2CO3 unde