1. The preparation, application, production and demand of imidazo〔1,2-b〕pyridazine were introduced.
   介绍了咪唑并〔1,2-b〕哒嗪的合成方法、用途、生产及需求。
2. Six series of aryloxy pyridazines derivatives have been synthesized starting from 3,6 dichloro pyradizine.
   以3,6-二氯哒嗪为原料,合成了6类芳氧基哒嗪类衍生物,研究了它们的合成方法,并测定了所得产物的除草活性。
3. Based on 3,6-dichloropyridazine, imidazo〔1,2-b〕pyridazine was synthesized via amination, cyclization and dechlorination.
   以3,6-二氯哒嗪为原料,经氨化、环合、脱氯得咪唑并〔1,2-b〕哒嗪。

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