申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0308084A1
公开(公告)日:1989-03-22
A process which comprises reacting an oxime of the formula:
wherein
R is H, alkyl, alkenyl, alkoxy, alkylthio, phenyl, phenoxy, halogen; and
Y is H or a group capable of substitution at the oxygen atom of an oxime;
with a compound of the formula:
wherein
R² & R³ are each independently H, COZ or CN, provided that they are not both H; or
R² & R³ together are -CO-O-CO- or -CO-NR⁴-CO-
Z is OR⁴ or NR⁴R⁵;
R⁴ & R⁵ are each independently H or groups capable of forming an ester or amide with a carboxylic acid; or
R⁴ & R⁵ together with the N atom form a aliphatic or aromatic heterocycle;
and X is halogen;
is useful for the preparation of intermediates for important herbicides.
一种过程包括反应以下式子的肟:
其中R为H,烷基,烯基,烷氧基,烷硫基,苯基,苯氧基,卤素;
Y为H或能够代替肟氧原子的基团;
与以下式子的化合物反应:
其中R²和R³各自独立地为H,COZ或CN,前提是它们不都是H;或者R²和R³一起为-CO-O-CO-或-CO-NR⁴-CO-,
Z为OR⁴或NR⁴R⁵;
R⁴和R⁵各自独立地为H或能够与羧酸形成酯或酰胺的基团;
或者R⁴和R⁵与N原子一起形成脂肪族或芳香族杂环;
X为卤素;
对于重要的除草剂中间体的制备是有用的。