Mercapto benzoxazole reacted with alkyl halide or N-substituted-2-chloroacetamides gave corresponding 2-alkylthiobenzoxazoles(2a～2h) and benzoxazole-2-ylthio-acetanilides (3a～3g) respectively. The structures of all ...Mercapto benzoxazole reacted with alkyl halide or N-substituted-2-chloroacetamides gave corresponding 2-alkylthiobenzoxazoles(2a～2h) and benzoxazole-2-ylthio-acetanilides (3a～3g) respectively. The structures of all the above compounds were confirmed by 1H NMR, IR and elemental analysis. Results showed that only compound 2g exhibited favorable fungicidal activity against Puccinia triticina(90%) in vivo at dosage of 500 mg/L; compounds 3a～3g exhibited inhibitory activity to Echinochloa oryzicola V and Brassica campestris L at the dosage of 150 mg/m 2.展开更多
The anti-oxidation performance of 3,7-di-iso-octyl-phenothiazine was measured in group Ⅰ,Ⅱ and Ⅳ base oils by rotating pressure vessel oxidation testing(RPVOT),pressure differential scanning calorimetry(PDSC)and ag...The anti-oxidation performance of 3,7-di-iso-octyl-phenothiazine was measured in group Ⅰ,Ⅱ and Ⅳ base oils by rotating pressure vessel oxidation testing(RPVOT),pressure differential scanning calorimetry(PDSC)and aging test,and its synergistic effect with 4,4′-di-iso-octyl-diphenylamine was examined.The results indicated that 3,7-di-iso-octyl-phenothiazine showed longer oxidation induction period and lower acid number increase than 4,4′-di-iso-octyl-diphenylamine,and their notable synergistic effect was observed.It was found that the anti-oxidation characteristics of the above-mentioned antioxidants were strongly affected by the composition of the corresponding base oil.展开更多
文摘Mercapto benzoxazole reacted with alkyl halide or N-substituted-2-chloroacetamides gave corresponding 2-alkylthiobenzoxazoles(2a～2h) and benzoxazole-2-ylthio-acetanilides (3a～3g) respectively. The structures of all the above compounds were confirmed by 1H NMR, IR and elemental analysis. Results showed that only compound 2g exhibited favorable fungicidal activity against Puccinia triticina(90%) in vivo at dosage of 500 mg/L; compounds 3a～3g exhibited inhibitory activity to Echinochloa oryzicola V and Brassica campestris L at the dosage of 150 mg/m 2.
文摘The anti-oxidation performance of 3,7-di-iso-octyl-phenothiazine was measured in group Ⅰ,Ⅱ and Ⅳ base oils by rotating pressure vessel oxidation testing(RPVOT),pressure differential scanning calorimetry(PDSC)and aging test,and its synergistic effect with 4,4′-di-iso-octyl-diphenylamine was examined.The results indicated that 3,7-di-iso-octyl-phenothiazine showed longer oxidation induction period and lower acid number increase than 4,4′-di-iso-octyl-diphenylamine,and their notable synergistic effect was observed.It was found that the anti-oxidation characteristics of the above-mentioned antioxidants were strongly affected by the composition of the corresponding base oil.
