CAS: 104-91-6; 4-Nitrosophenol

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CAS号108-95-2 苯酚 | CAS号123-30-8 对氨基苯酚 | CAS号13446-48-5 亚硝酸铵 | CAS号7664-93-9 硫酸 | CAS号623-07-4 chloro-(4-hydro... | CAS号1516-21-8 BENZENE, 1-METH... | CAS号3420-97-1 4-nitrosophenetole | CAS号63975-21-3 N-hydroxyacetam... | CAS号100-65-2 N-苯基羟胺 | CAS号1473-33-2 1,3-bis(4-hydro... | CAS号106-41-2 对溴苯酚 | CAS号106-48-9 对氯苯酚 | CAS号123-31-9 对苯二酚 | CAS号100-02-7 对硝基苯酚 | CAS号123-30-8 对氨基苯酚 | CAS号619-08-9 2-氯-4-硝基酚 | CAS号540-38-5 4-碘苯酚 | CAS号23576-79-6 Phenol,4-[(1-me... | CAS号99-28-5 2,6-二溴-4-硝基苯酚

对氨基苯酚置于cpmo(Co)3(Ccph) 双氧水体系中,用 叔丁醇 用作溶剂,化学反应 12.0H,反应生成4-亚硝基苯酚
参考文献:使用乙炔钼氧-过氧配合物作为催化剂将芳族胺选择性n氧化为亚硝基衍生物
标题:使用乙炔钼氧-过氧配合物作为催化剂将芳族胺选择性n氧化为亚硝基衍生物
摘要:通过处理相应的羰基钼钼羰基配合物cpmo(co)3(ccph)原位获得乙炔钼氧基-过氧配合物;Cp =η 5-C 5 H ^ 5用h 2 ö 2,已被用作用于伯胺到亚硝基衍生物的选择性n-氧化的有效催化剂.使用30%的过氧化氢作为氧化剂,可获得出色的胺转化率(最高100%)和对亚硝基化合物的极高选择性(99%).还发现过氧羰基过氧mo(vi)配合物对于在芳环上具有给电子以及吸电子取代基的各种取代的伯芳族胺的氧化具有很高的活性.
Doi:10.1016/j.Tetlet.2008.04.005

专利信息

专利号:US-12098124-B2
优先权日:2019-04-16
标 题:Acid catalyzed synthesis of methyl acrylate from acrylic acid and methanol
发明人：CHAKRABARTI REETAM; NGO MINH N; ELDER JAMES
权利人:ROHM & HAAS
摘要:A method for preparing methyl acrylate comprises:a) heating in a reaction zone a mixture comprising acrylic acid, methanol, and an acid catalyst to react and form a reaction product comprising methyl acrylate which is vaporized with other light components and then fed to a distillation zone, wherein a feed stream entering the reaction zone comprises methanol to acrylic acid in a molar ratio of greater than 1 and less than 2, and a residence time in the reaction zone ranges from 0.25 to 2 hours;b) condensing and phase-separating a distillate from the distillation zone to form an organic phase comprising methyl acrylate and an aqueous phase;c) returning a portion of the organic phase to the distillation zone as organic reflux; andd) feeding the remainder of the organic phase and the aqueous phase of the distillation zone to an extraction column to form a methanol rich aqueous effluent and an organic effluent comprising methyl acrylate.

专利号:US-12252455-B2
优先权日:2019-12-09
标 题 :Process for the continuous preparation of heavy alkyl acrylates
发明人：BELLINI CLEMENT; MAGET SANDRA; DEFER PATRICE
权利人:ARKEMA FRANCE
摘要:The present invention relates to a process for the continuous synthesis of heavy alkyl acrylates by a transesterification reaction using hydrozincite as a heterogeneous catalyst.

专利号:US-12065403-B2
优先权日:2019-04-16
标 题 :Acid catalyzed synthesis of methyl acrylate from acrylic acid and methanol
发明人：CHAKRABARTI REETAM; NGO MINH N; ELDER JAMES
权利人:ROHM & HAAS
摘要:A method for preparing methyl acrylate comprises heating in a reaction zone a mixture comprising acrylic acid, methanol, and an acid catalyst to react and form a reaction product comprising methyl acrylate which is vaporized with other light components and then fed to a distillation zone. A feed stream entering the reaction zone comprises methanol and acrylic acid in a molar ratio of greater than 1 and less than 2, and a residence time in the reaction zone ranges from 0.25 to 2 hours. A distillate from the distillation zone is condensed and phase-separated to form an organic phase comprising methyl acrylate and an aqueous phase. A portion of the organic phase is returned to the distillation zone as organic reflux. The remainder of the organic phase and the aqueous phase of the distillation zone is fed to an extraction column to form a methanol rich aqueous effluent and an organic effluent comprising methyl acrylate. The organic effluent from the extraction column is purified in a single finishing column, wherein a light ends stream is removed from the top of the finishing column, a bottoms stream is removed from the bottom of the finishing column, and methyl acrylate is removed from a side draw stream.

专利号:US-2024174785-A1
优先权日:2021-03-10
标题 :Method for producing polymer, composition for radical polymerization, and radical polymerization inhibitor
发明人：TAKAYAMA TAKUMI; TSUCHIYA HINAKO; MAEKAWA KAZUHIKO
权利人:KURARAY CO
摘要:A method of producing a polymer including a polymerization step of obtaining a polymer by controlled radical polymerization of a monomer (Y) in the presence of an organic compound (A) represented by formula (I) and its constituents and a radical generator (B), where a molar ratio (B/A) of (B) to (A) is from 0.5 to 20. The production method allows synthesis of a highly safe polymer with a high molecular weight while precisely controlling the molecular sequence and the end structure. In addition, the production method is low in toxicity, environmentally friendly, and operated at low costs.

专利号:US-11485702-B2
优先权日:2018-10-02
标 题 :Aminoalkyl (meth)acrylate stabilisation
发明人：BELLINI CLEMENT; CABON YVES; DEFER PATRICE
权利人:ARKEMA FRANCE
摘要:The present invention relates to the use of a stabilizing composition comprising at least one N-oxyl compound and at least one polymerization inhibitor other than an N-oxyl compound, for inhibiting transesterification catalyst degradation in a process for the synthesis of aminoalkyl (meth)acrylates. Preferably, the transesterification catalyst is a titanium organometallic compound and the stabilising composition comprises at least one N-oxyl derivative and at least one polymerization inhibitor chosen from phenolic compounds and phenothiazine compounds in a weight ratio of between 1 and 10, preferably between 4 and 10, limits inclusive.

专利号:EP-3956285-B1
优先权日:2019-04-16
标题:Acid catalyzed synthesis of methyl acrylate from acrylic acid and methanol