3-氯苯并[ b ]噻吩-2-羰基氯与2-烷基-2-氨基丙酰胺的反应已用于制备一系列羧酰胺1a-d(产率61-85%)。将产物进行碱催化的闭环反应,得到相应的4,5-二氢-1 H-咪唑-5-酮2a-d(产率69-97%)。通过N-甲基化和N-苄基化,制备了相应的1-烷基衍生物3a(91%)和3b(85%)。这两个烷基衍生物是从潜在的替代3-氯取代基的哌啶由的观点出发研究了通过布赫瓦尔德-哈特维格反应。发现该反应除了产生所需的CN偶联剂5a(14%)和5b(12%)以外,还产生还原性脱氯产物4a(最大57%)和4b(最大56%)。如果使用丁基二-(1-金刚烷基)膦(BDAP),则仅形成(42%)还原性脱氯产物4a。
Method for controlling the relative stem growth of plants
申请人:American Cyanamid Company
公开号:US04092147A1
公开(公告)日:1978-05-30
The invention relates to a method for controlling the relative stem growth of plants by applying to the foliage of the plants, or to soil containing seeds of the plants, a plant-growth-regulating amount of a dihydroimidazoisoindoledione or an optical or stereo isomer thereof.
The invention relates to a method for inhibiting the bud growth of plants by applying to the foliage of the plants, or to soil containing seeds of the plants, a plant-growth-regulating amount of a dihydroimidazoisoindoledione or an optical or stereo isomer thereof.
Imidazoisoindolediones and the use thereof as herbicidal agents
申请人:American Cyanamid Company
公开号:US04017510A1
公开(公告)日:1977-04-12
The invention relates to novel imidazoisoindoledione compounds including the optical isomers thereof. This invention also relates to a method for the control of undesirable plant species with the imidazoisoindolediones and their optical isomers, and further, to a process for the preparation of the compounds.
Dihydroimidaz oisoindolediones and the use thereof as herbicidal agents
申请人:American Cyanamid Company
公开号:US04041045A1
公开(公告)日:1977-08-09
The invention relates to novel dihydroimidazoisoindoledione compounds and the optical and stereo isomers thereof. This invention also relates to a method for the control of undesirable plant species with the dihydroimidazoisoindolediones and their optical and stereo isomers, and further, to a process for the preparation of the compounds.