PROCESS FOR THE PREPARATION OF PYRROLINES FROM GAMMA-NITROKETONES. USE OF THE GAMMA-NITROKETONES AS PESTICIDAL AGENTS
申请人:Moradi Wahed Ahmed
公开号:US20130109757A1
公开(公告)日:2013-05-02
The invention is directed to method for the preparation of pyrrolines of the general formula (I)
by catalytic hydration of a nitroketone of the general formula (II)
employing a transition metal catalyst and gaseous hydrogen at an elevated pressure in a solvent, optionally in the presence of at least one additive selected among Lewis acids, Brønstedt acids, organic sulfur-containing compounds, organic or inorganic bases, and water scavengers, wherein in formulae (I) and (II) B
1
, B
2
, B
3
, B
4
, X, R, and T are as defined in the specification, and to a nitroketone of formula (II) to be used as intermediate in the process according to the invention and as pesticidal agent.
本发明涉及一种制备一般式为(I)的吡咯烷的方法,通过在溶剂中使用过渡金属催化剂和气态氢,在升高的压力下催化水合一般式为(II)的硝基酮,可选地,在Lewis酸,Brønstedt酸,有机含硫化合物,有机或无机碱和水清除剂中选择至少一种添加剂的存在下进行,其中在公式(I)和(II)中,B1,B2,B3,B4,X,R和T如规范所定义,并提供了一种公式(II)的硝基酮作为本发明中间体和杀虫剂。