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公开(公告)号:US4260562A
公开(公告)日:1981-04-07
申请号:US124964
申请日:1980-02-27
CPC分类号: C07C239/10 , C07C2101/14
摘要: O,N-Disubstituted hydroxylamines are prepared by reacting O-substituted ketoximes with hydrogen in the presence of a platinum catalyst at from 35 to 50 bar, in a medium containing a mineral acid.The O,N-disubstituted hydroxylamines I obtained by the process of the invention are valuable starting materials for the preparation of dyes, crop protection agents and drugs.
摘要翻译: O,N-二取代的羟胺通过在含有无机酸的介质中,在铂催化剂存在下,在35-50巴条件下使O-取代的酮肟与氢反应来制备。 通过本发明方法获得的O,N-二取代的羟胺I是制备染料,作物保护剂和药物的有价值的起始原料。
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42.
公开(公告)号:US4207243A
公开(公告)日:1980-06-10
申请号:US41522
申请日:1979-05-22
IPC分类号: C07D307/68
CPC分类号: C07D307/68
摘要: A process for the preparation of a 2,5-dimethylfuran-3-carboxylic acid ester from an .alpha.-acyloxypropionaldehyde and an acetoacetic acid ester in the presence of anhydrous iron-III chloride.
摘要翻译: 一种在无水氯化铁III存在下由α-酰氧基丙醛和乙酰乙酸酯制备2,5-二甲基呋喃-3-羧酸酯的方法。
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