申请人:NISSAN CHEMICAL INDUSTRIES LTD.
公开号:EP0336558A1
公开(公告)日:1989-10-11
Novel methyl-3,3′-dialkoxypropylphosphinic acid derivatives of the formula (I),
which are useful intermediates for manufacturing herbicidal compounds, were prepared by oxo synthesis of a readily available and inexpensive compound (II).
According to amido-carbonylation of the compounds (I), a following compound (V) also useful intermediates for a herbicidal compound was obtained.
According to concurrent amido-carbonylation of the compounds (II), the compounds (V) and/or following compounds (VI) also useful intermediates for the herbicidal compound was obtained.
R¹ means alkyl, R² means alkyl or phenyl which may be substituted and X means lower alkyl, halo-lower alkyl or phenyl which may be substituted.
新型甲基-3,3′-二烷氧基丙基膦酸衍生物的式 (I)、
通过对一种容易获得且价格低廉的化合物(II)进行氧代合成,制备出了新型甲基-3,3′-二烷氧基丙基膦酸衍生物,该衍生物是生产除草化合物的有用中间体。
通过对化合物(I)进行酰胺基羰基化,得到了以下化合物(V),它们也是除草化合物的有用中间体。
通过同时对化合物(II)进行酰胺基羰基化,可以得到化合物(V)和/或后续化合物(VI),它们也是除草化合物的有用中间体。
R¹ 表示烷基,R² 表示烷基或可能被取代的苯基,X 表示低级烷基、卤代低级烷基或可能被取代的苯基。