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PROCESS FOR THE PREPARATION OF PYRROLINES FROM GAMMA-NITROKETONES. USE OF THE GAMMA-NITROKETONES AS PESTICIDAL AGENTS
专利权人:
发明人:
申请号:
EP11714034.3
公开号:
EP2558444A1
申请日:
2011.04.11
申请国别(地区):
EP
年份:
2013
代理人:
摘要:
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) B1, B2, B3, B4, 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.
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