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公开(公告)号:US6063967A
公开(公告)日:2000-05-16
申请号:US94595
申请日:1998-06-15
申请人: Laurent Bernard , Pascal Metivier
发明人: Laurent Bernard , Pascal Metivier
IPC分类号: C07C201/08 , C06B25/04 , C07C205/24 , C07C205/00
CPC分类号: C07C201/16 , C07C201/08
摘要: Picric acid, namely, 2,4,6-trinitrophenol, is readily and effectively prepared by nitrating o-nitrophenol and/or p-nitrophenol into at least one dinitrophenol in a nitric acid medium of reaction, characteristically essentially consisting of nitric acid or immixture thereof with a strong co-acid, the at least one dinitrophenol remaining soluble in the medium of reaction, and therein completing nitration of the at least one dinitrophenol and precipitating picric acid therefrom.
摘要翻译: 苦味酸,即2,4,6-三硝基苯酚,通过在硝酸反应介质中将邻硝基苯酚和/或对硝基苯酚硝化成至少一种二硝基酚而容易且有效地制备,其特征在于主要由硝酸或杂质组成 其中所述至少一种二硝基苯酚仍然可溶于所述反应介质中,并且其中完成所述至少一种二硝基苯酚的硝化并从其沉淀出苦味酸。
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公开(公告)号:US5414148A
公开(公告)日:1995-05-09
申请号:US249200
申请日:1994-05-26
申请人: Pascal Metivier , Laurent Bernard
发明人: Pascal Metivier , Laurent Bernard
IPC分类号: C07C201/06 , C07C201/10 , C07C205/22 , C07C207/04 , C07C205/20 , C07C205/21 , C07C205/26
CPC分类号: C07C201/00 , C07C201/08
摘要: p-Nitrophenolic compounds, e.g., p-nitrophenol itself, are selectively prepared by (a) reacting a phenolic compound with a nitrosating agent in the presence of sulfuric acid, the concentration of which H.sub.2 SO.sub.4 being at least 60%, (b) oxidizing the p-nitrosophenolic compound thus formed with nitric acid, the concentration of sulfuric acid in the medium of reaction, upon completion of oxidation, being no greater than 80%, and (c) separating the p-nitrophenolic compound which thus precipitates.
摘要翻译: 通过(a)在硫酸存在下使酚类化合物与亚硝化剂反应,其中H 2 SO 4的浓度为至少60%,(b)将硝基酚类化合物氧化为 由硝酸形成的对亚硝基苯酚化合物,氧化后的反应介质中的硫酸浓度不大于80%,(c)分离因此析出的对硝基酚化合物。
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