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.
By taking 3 chloro 4 methyl aniline as raw material,two solvent mixtures of naphtha and petroleum ether in a certain proportion,and through sulfonation 2 amino 4 chloro 5 toluene sulfonic acid was synthesized.The yiel...By taking 3 chloro 4 methyl aniline as raw material,two solvent mixtures of naphtha and petroleum ether in a certain proportion,and through sulfonation 2 amino 4 chloro 5 toluene sulfonic acid was synthesized.The yield of product was about 90%,and the recovery of solvents was over 95%.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By taking 3 chloro 4 methyl aniline as raw material,two solvent mixtures of naphtha and petroleum ether in a certain proportion,and through sulfonation 2 amino 4 chloro 5 toluene sulfonic acid was synthesized.The yield of product was about 90%,and the recovery of solvents was over 95%.
