申请人:The Dow Chemical Company
公开号:US03966768A1
公开(公告)日:1976-06-29
The present invention is directed to new substituted 1,3-dioxepin compounds corresponding to the formula: ##SPC1## Wherein R is a lower alkyl group of from 1 to about 8, both inclusive, carbon atoms or an aryl group of from 6 to about 8 carbon atoms inclusive. R' is hydrogen or an alkyl group of from 1 to about 8, both inclusive, carbon atoms, and n is an integer of from 0 to about 8. The present invention is further directed to a novel process for the preparation of such substituted 1,3-dioxepin compounds wherein n is 0 by reacting, at room temperatures, a corresponding trialkyl orthoalkanoate with cis-2-butene-1,4-diol in the presence of a non-oxidizing acid catalyst. The compounds of the present invention are suitable for use as herbicides.
本发明涉及新的取代1,3-二氧杂环庚烷化合物,其对应于以下式子:##SPC1## 其中R是1到约8个碳原子的低级烷基或包括6到约8个碳原子的芳基。R'是氢或1到约8个碳原子的烷基,n是0到约8的整数。本发明还涉及一种新的制备这种取代1,3-二氧杂环庚烷化合物的方法,其中n为0,通过在非氧化性酸催化剂存在下,在室温下反应相应的三烷基正交酯和顺-2-丁烯-1,4-二醇。本发明的化合物适用于用作除草剂。