闪蒸真空热解(FVP) 氨基哒嗪酮Meldrum酸的衍生物在600°C(0.02 Torr)的条件下会生成亚氨基酮基中间体,然后环化。在5-氨基衍生物的情况下,产物是吡啶并[2,3- d ]哒嗪,而4-氨基化合物导致了吡啶并[2,3- d ]哒嗪和吡咯并[3,2- c ]的混合物]哒嗪。相应的相应反应可支持形成两个吡啶并[2,3- d ]哒嗪所需的氯原子的1,5-σ位移的可行性。2,6-二氯苯胺衍生物。模型化合物的FVP反应中的相关过程和DFT计算支持了形成吡咯并[3,2- c ]哒嗪所需的脱羧机理的可行性。
闪蒸真空热解(FVP) 氨基哒嗪酮Meldrum酸的衍生物在600°C(0.02 Torr)的条件下会生成亚氨基酮基中间体,然后环化。在5-氨基衍生物的情况下,产物是吡啶并[2,3- d ]哒嗪,而4-氨基化合物导致了吡啶并[2,3- d ]哒嗪和吡咯并[3,2- c ]的混合物]哒嗪。相应的相应反应可支持形成两个吡啶并[2,3- d ]哒嗪所需的氯原子的1,5-σ位移的可行性。2,6-二氯苯胺衍生物。模型化合物的FVP反应中的相关过程和DFT计算支持了形成吡咯并[3,2- c ]哒嗪所需的脱羧机理的可行性。
Photobleaching Activity of 2-(Phenylamino)methylidenecyclohexane-1,3-diones in Tobacco (<i>Nicotiana</i> <i>tabacum</i>) Cultured Cells
作者:Jing-Ming Wang、Tadao Asami、Fan-Sik Che、Noboru Murofushi、Shigeo Yoshida
DOI:10.1021/jf960962i
日期:1997.7.1
A series of phenylalkylidenecyclohexane-1,3-dione derivatives were designed and synthesized as vinylogous analogs of phthalimides, which are known photobleaching herbicides. The bleaching activity of synthesized compounds was assayed with photomixotrophic tobacco cultured cells under either light or dark conditions. Both the chlorophyll and the carotenoid contents of the cells treated with the cyclic diones decreased to almost zero within 24 h under the light condition but not under the dark condition. This rapid emergence of bleaching activity with light is one of the most distinctive actions of Protox-inhibiting herbicides; however, the cyclic dione did not inhibit protoporphyrinogen oxidase in vitro. Thus, we concluded that the cyclic diones possessed a different herbicidal mode of action from Protox-inhibiting herbicide.