CAS: 539-03-7; N-(4-Chlorophenyl)Acetamide

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对氯苯乙酮置于zinc(II) Chloride,Hydroxylamine-O-Sulfonic Acid体系中,用 水 作为反应溶剂,化学反应 8.0H,以86%的收率获得产物对氯乙酰苯胺
参考文献:锌(II)催化的水性介质中羟基胺-O-磺酸的贝克曼重排反应从酮催化合成仲酰胺
标题:锌(II)催化的水性介质中羟基胺-O-磺酸的贝克曼重排反应从酮催化合成仲酰胺
摘要:开发了锌(II)催化贝克曼重排的一步法,使用羟胺-O-磺酸(hosa)作为水中的氮源.该直接方法在碱性水溶液后处理后,在开放气氛下以纯净形式有效地生产仲酰胺.它对环境无害且操作简单.
DOI:10.1055/s-0040-1707809

专利信息

专利号:US-7531694-B2
优先权日:2004-07-07
标题:Process for synthesis of 4-4′-diamino-diphenyl-sulfone
发明人：VILLA MARCO; DE FAVERI CARLA; ZANOTTI RICCARDO; CIARDELLA FRANCESCO; BORIN FABRIZIO
权利人:LUNDBECK PHARMACEUTICALS ITALY
摘要:A new process for the preparation and purification of 4-4′-diamino-diphenyl-sulfone (dapsone) is described. The process described is a three step process comprising a condensation reaction with the synthesis of a thioether intermediate and then steps of oxidation and reduction in suitable conditions in order to obtain a product with good yield and purity.

专利号:US-3896170-A
优先权日:1969-02-26
标题 :Intermediates for the preparation of 1,3-dihydro-2h-1, -benzodiazepin-2-ones
发明人：MCCAULLY RONALD J
权利人:AMERICAN HOME PROD
摘要:Two routes for the preparation of 2-(2-acylamido-2-amino)acetamidophenyl aryl ketones, used as intermediates in the synthesis of psycholeptic 1,3-dihydro-2H-1,4-benzodiazepin-2-ones are described. The first of these routes involves the formation of a 2-(2,2-diacyloxy)acetamidophenyl aryl ketone from glyoxylic acid and an aryl phenyl ketone via either a 2,2-diacyloxy acetyl halide or a 2,2-diacyloxy acetyl anhydride, conversion thereof to the corresponding 2-(2-acylamido-2-hydroxy) acetamidophenyl aryl ketone directly or via the 2-(2,2-dihydroxy)acetamidophenyl aryl ketone, formation of the corresponding 2-(2-acylamido-2halo)acetamidophenyl aryl ketone, and conversion to the 2-(2acylamido-2-amino)acetamidophenyl aryl ketone. The second route forms the 2-(2,2-dihydroxy) acetamidophenyl aryl ketone by reacting a 2,3-dicarboxylicacyl tartaric anhydride with a 2aminophenyl aryl ketone to obtain a 2-(3-carboxy-2,3acyloxy)propionamidophenyl aryl ketone, selectively hydrolyzing the so-obtained ketone and selectively oxidizing the product with a vic glycol cleaving agent.

专利号:US-2008293970-A1
优先权日:2004-07-07
标 题:Process for Synthesis of 4-4'-Diamino-Diphenyl-Sulfone

专利号:WO-2006002690-A1
优先权日:2004-07-07
标 题 :Process for synthesis of 4-4'-diamino-diphenyl-sulfone

专利号:EP-1778630-B1
优先权日:2004-07-07
标题 :Process for synthesis of 4-4'-diamino-diphenyl-sulfone

专利号:CA-2573114-C
优先权日:2004-07-07
标题:Process for synthesis of 4-4'-diamino-diphenyl-sulfone