Аннотация:
2,4,6-Triazido-3,5-dichloropyridine, obtained by the reaction of pentachloropyridine with sodium azide, readily adds two molecules of dimethyl acetylenedicarboxylate to the azide groups at the 2- and 6-positions, whereas, in the reaction with norbornene, it forms a cycloadduct only at the azido group in the 4-position.
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