Der Einfluß von Atropisomerie und chiralem Zentrum auf die biologische Aktivität des Metolachlor / The Influence of Atropisomerism and Chiral Centre on the Biological Activity of Metolachlor
作者:Hans Moser、Grety Rihs、Hanspeter Sauter
DOI:10.1515/znb-1982-0411
日期:1982.4.1
stereoisomers of the grass herbicide Metolachlor, the isomerism of which is based on a combination of a chiral centre and a chiral axis, were prepared, and their absolute configurations determined by X-ray analysis. The synthesis was achieved by using optically active starting materials and new optically active carbamates as intermediates. The herbicidal activity is mainly influenced by the chiral centre, the
制备了草除草剂异丙甲草胺的四种立体异构体,其异构体基于手性中心和手性轴的组合,并通过X射线分析确定了它们的绝对构型。该合成是通过使用光学活性起始材料和新的光学活性氨基甲酸酯作为中间体来实现的。除草活性主要受手性中心的影响,S-异构体是最活跃的。