A series of 2 amimo 3 cyano 7,7 dimethyl 4 aryl 5 oxo 5,6,7,8 tetra 4H chromenes were synthesized in the absence of catalyst. Their structures were determined by IR, 1H NMR, and single crystal X ray diffraction.
Acylation of 2-amio-5-aryl-1,3,4-oxadiazoles with acyl chlorides and trichloroacetic acid to afford eleven new -N--[5-aryl-1,3,4-oxadiazol-2-yl]-substituted amides. The required oxadiazole precursors are prepared by o...Acylation of 2-amio-5-aryl-1,3,4-oxadiazoles with acyl chlorides and trichloroacetic acid to afford eleven new -N--[5-aryl-1,3,4-oxadiazol-2-yl]-substituted amides. The required oxadiazole precursors are prepared by oxidative cyclization of corresponding aldehyde semicarbazones. The structures of the synthesized compounds are elucidated by elemental analysis、 1HNMR、IR and MS. They are screened for their larvicidal activities against wild fruit and antibiotic activities.展开更多
文摘A series of 2 amimo 3 cyano 7,7 dimethyl 4 aryl 5 oxo 5,6,7,8 tetra 4H chromenes were synthesized in the absence of catalyst. Their structures were determined by IR, 1H NMR, and single crystal X ray diffraction.
文摘Acylation of 2-amio-5-aryl-1,3,4-oxadiazoles with acyl chlorides and trichloroacetic acid to afford eleven new -N--[5-aryl-1,3,4-oxadiazol-2-yl]-substituted amides. The required oxadiazole precursors are prepared by oxidative cyclization of corresponding aldehyde semicarbazones. The structures of the synthesized compounds are elucidated by elemental analysis、 1HNMR、IR and MS. They are screened for their larvicidal activities against wild fruit and antibiotic activities.
