申请人:Bayer Aktiengesellschaft
公开号:US05439874A1
公开(公告)日:1995-08-08
The invention relates to novel substituted bicyclo[3.1.0]hexanes of the formula ##STR1## in which R.sup.1 represents, e. g., hydroxyl or alkoxy, R.sup.2 to R.sup.8 represent, e. g., hydrogen or alkyl, R.sup.9 and R.sup.10 represent, e.g., methyl or methoxy, X represents, e.g., oxygen, Y represents, e.g., oxygen or sulphur and Z represents, e.g., CH or N, as well as salts of the free acid (R.sup.1 =OH) and their further functional derivatives, and furthermore to processes and novel intermediates for their preparation, and to their use as herbicides. In addition, a novel process is described for preparing certain 2-keto-bicyclo[3.1.0]hexanes, which are required as intermediates, starting from correspondingly substituted .alpha.,.beta.-unsaturated carbonyl compounds (of the methacrolein type) and .beta.-keto acid esters (of the acetoacetic acid ester type).
本发明涉及一种新型取代的[3.1.0]双环己烷,其化学式为##STR1##其中,R.sup.1代表羟基或烷氧基,R.sup.2至R.sup.8代表氢或烷基,R.sup.9和R.sup.10代表甲基或甲氧基,X代表氧,Y代表氧或硫,Z代表CH或N,以及自由酸(R.sup.1=OH)的盐及其进一步的功能衍生物,以及其作为除草剂的用途。此外,还描述了一种新的过程,用于制备某些2-酮基[3.1.0]双环己烷,这些中间体起始于相应的取代的α,β-不饱和羰基化合物(例如甲基丙烯醛型)和β-酮酸酯(例如乙酰乙酸酯型)。