A convenient and efficient route has been developed to synthesize 1,3,4-oxadiazol-2(3H)-ones from CO2, hydrazines and aryl or aliphatic aldehydes. Promoted by hypoiodite (IO-) generated in situ from KI and oxidant TBHP, the one-pot synthesis could proceed smoothly to afford the desired products in moderate to high yields. Mechanism studies revealed that nitrile imine was an important intermediate in
已经开发了一种方便有效的途径来由
CO2,
肼和芳基或脂族醛合成1,3,4-恶二唑-2(3H)-。由KI和氧化剂
TBHP原位生成的次
碘酸盐(IO-)促进,一锅法合成可以顺利进行,以中等至高收率提供所需产物。机理研究表明,腈
亚胺是该转化过程中的重要中间体。值得注意的是,通过这种途径可以成功地合成商业
除草剂恶草二酮。