开发了一种新的催化体系,并应用于LLM-105合成的氧化反应,其中质子化过硫钨酸盐结合壳聚糖用作催化剂。使用H 2 O 2作为氧化剂,可以合成吡嗪-1-氧化物,2,6-二甲氧基吡嗪-1-氧化物,2,6-二氯吡嗪-1-氧化物和2-氯吡咯。不添加三氟乙酸的6-甲氧基吡嗪-1-氧化物,为LLM-105的新颖且对环境无害的合成路线提供了重要的探索。还使用高斯03进行了理论研究,以评估氧化过程。所有的计算数据与我们的实验结果非常吻合。
Compounds of the formula: ##STR1## and their N-oxides and acid-addition salts are disclosed having pharmacological activity as anorexic agents.
公式为:##STR1##的化合物及其N-氧化物和酸盐加合物被披露,具有作为厌食剂的药理活性。
6-Chloro-2-(1-piperazinyl)pyrazine
申请人:Merck & Co., Inc.
公开号:US04082844A1
公开(公告)日:1978-04-04
The compound 6-chloro-2-(1'-piperazinyl)pyrazine, its N-oxides and acid-addition salts are disclosed having pharmacological activity as anorexic agents.
这种化合物6-氯-2-(1'-哌嗪基)吡啶,其N-氧化物和酸盐具有作为厌食剂的药理活性。
Cyanatothiomethylthio pyrazines
申请人:The Dow Chemical Company
公开号:US04101546A1
公开(公告)日:1978-07-18
Compounds are prepared which correspond to the formula ##STR1## wherein n represents an integer of 0 to 3; p represents an integer of 0 to 2 and the sum of n + p is an integer of 0 to 3; and r is 0 or 1. These compounds have been found to be active as pesticides and find particular usage as fungicides, bactericides, nematocides and herbicides.