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Synthesis of 2-Aminoaryl-5-substituted-1,3,4-thiadiazoles in a Thermal 1,3-Dipolar Cycloaddition Reaction.

✍ Scribed by Katarzyna Gobis; Henryk Foks; Zofia Zwolska; Ewa Augustynowicz-Kopec

Publisher: John Wiley and Sons
Year: 2006
Weight: 27 KB
Volume: 37
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200614134

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## Abstract The reaction of N‐aryl‐C‐ethoxycarbonyl nitrilimines with [1,2,4]triazepin‐3,5‐dithione leads to title compounds. The 1,3‐dipolar cycloaddition is completely peri and regioselective. The preferred orientation of addition is predicted correctly by AM~1~ calculation.