模拟投料环境,探索温度、时间、氧化剂NaClO、弱碱NaHCO_(3)、弱酸NaHSO_(3)对DTD分解情况的影响。结果表明:温度低于15℃时DTD分解缓慢,高于15℃时DTD分解迅速,且随时间的延长分解加剧。氧化剂NaClO会造成产物的迅速分解,4 h DTD分解剩...模拟投料环境,探索温度、时间、氧化剂NaClO、弱碱NaHCO_(3)、弱酸NaHSO_(3)对DTD分解情况的影响。结果表明:温度低于15℃时DTD分解缓慢,高于15℃时DTD分解迅速,且随时间的延长分解加剧。氧化剂NaClO会造成产物的迅速分解,4 h DTD分解剩余24.53%。NaHCO_(3)、NaHSO_(3)的加入对DTD的分解影响较小。为避免长时间对收率的影响,合成结束后需迅速进行后处理,对后期工业化生产具有重要的指导意义。展开更多
In an attempt to search for novel compounds with agricultural bioactivity,a series of new polysubstituted pyridine derivatives,α-[2-methyl-5-cyano4-（furan-2-yl）-3-ethoxycarboxyl-pyridine-6-thio]acetamide 4a, 2-meth...In an attempt to search for novel compounds with agricultural bioactivity,a series of new polysubstituted pyridine derivatives,α-[2-methyl-5-cyano4-（furan-2-yl）-3-ethoxycarboxyl-pyridine-6-thio]acetamide 4a, 2-methyl-5-cyano-4-（furan-2-yl）-3-acetyl pyridine-6-thioethers [STHZ]5 and 6a were designed and synthesized by a three-step or one-step synthetic route.The structures of all the compounds prepared were confirmed by（elemental） analysis and 1H NMR.The preliminary bioassay results indicate that compound 4a possesses certain fungicidal and herbicidal activities.展开更多
文摘模拟投料环境,探索温度、时间、氧化剂NaClO、弱碱NaHCO_(3)、弱酸NaHSO_(3)对DTD分解情况的影响。结果表明:温度低于15℃时DTD分解缓慢,高于15℃时DTD分解迅速,且随时间的延长分解加剧。氧化剂NaClO会造成产物的迅速分解,4 h DTD分解剩余24.53%。NaHCO_(3)、NaHSO_(3)的加入对DTD的分解影响较小。为避免长时间对收率的影响,合成结束后需迅速进行后处理,对后期工业化生产具有重要的指导意义。
文摘In an attempt to search for novel compounds with agricultural bioactivity,a series of new polysubstituted pyridine derivatives,α-[2-methyl-5-cyano4-（furan-2-yl）-3-ethoxycarboxyl-pyridine-6-thio]acetamide 4a, 2-methyl-5-cyano-4-（furan-2-yl）-3-acetyl pyridine-6-thioethers [STHZ]5 and 6a were designed and synthesized by a three-step or one-step synthetic route.The structures of all the compounds prepared were confirmed by（elemental） analysis and 1H NMR.The preliminary bioassay results indicate that compound 4a possesses certain fungicidal and herbicidal activities.
