检索结果-南通市图书馆

oxone/CaCl_2/TEMPO体系在温和条件下对醇的氧化反应

在线全文

学校读者我要写书评

暂无评论

有机化学 2010年第2期30卷 250-253页

作者：陶晓春曹雄杰余伟张钧陶华东理工大学金属有机化学研究室上海200237 SH-Icon Inc.

oxone/TEMPO/CaCl2(TEMPO=2,2,6,6-Tetramethyl-1-piperidinyloxy)是一种稳定安全和易得的氧化催化体系,在室温条件下,可以氧化苄基或烷基醇生成醛或酮.苄基伯醇很容易被氧化成相应的醛,有较高的反应收率(90%～96%),仲醇氧化成相应的酮... 详细信息

oxone/TEMPO/CaCl2(TEMPO=2,2,6,6-Tetramethyl-1-piperidinyloxy)是一种稳定安全和易得的氧化催化体系,在室温条件下,可以氧化苄基或烷基醇生成醛或酮.苄基伯醇很容易被氧化成相应的醛,有较高的反应收率(90%～96%),仲醇氧化成相应的酮,收率在81%～85%之间,1,4-丁二醇环氧化生成γ-丁内酯得到了94%的收率.

关键词： oxone 醇 CaCl2 TEMPO 氧化

KX/oxone体系实现的N-烯丙基芳酰胺的氧化卤环化反应:5-卤甲基-2-噁唑啉的绿色合成

在线全文

学校读者我要写书评

暂无评论

有机化学 2020年第12期40卷 4298-4304页

作者：刘新明李路晋李成赵金灿华远照王敏灿刘澜涛商丘师范学院化学化工学院河南商丘476000 河北大学化学与环境科学学院河北保定071002 郑州大学化学学院郑州450001

以廉价的卤化钾为卤源,oxone为氧化剂,一系列烯丙胺在温和的条件下经过卤环化反应以较好的产率得到5-卤甲基-2-噁唑啉.该方法的优势在于应用了便宜的卤源,没有有机副产物的产生,具有成本低廉和环保友好的特点.5-卤甲基-2-噁唑啉还可以... 详细信息

以廉价的卤化钾为卤源,oxone为氧化剂,一系列烯丙胺在温和的条件下经过卤环化反应以较好的产率得到5-卤甲基-2-噁唑啉.该方法的优势在于应用了便宜的卤源,没有有机副产物的产生,具有成本低廉和环保友好的特点.5-卤甲基-2-噁唑啉还可以通过不同的亲核取代反应得到许多有用的衍生物.

关键词： oxone 卤环化噁唑啉

Highly efficient oxidation of alcohols using oxone~ as oxidant catalyzed by ruthenium complex under mild reaction conditions

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2008年第9期19卷 1031-1034页

作者： Zi Qiang Lei Jian Qiang Wang Peng Hua Yan Key Laboratory of Polymer Materials of Gansu Province College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070 China

Aromatic and alkyl alcohols were oxidized to the corresponding aldehydes or ketones at room temperature with high conversion and selectivity using oxone （2KHSOs-KHSO4.K2SO4） as oxidant catalyzed by ruthenium complex Quin-Ru-Quin （where Quin = 8-hydroxyquinoline）. The reaction time is very short and the preparation of complex is simple.

关键词： Oxidation of alcohols oxone Ruthenium complex

oxone-Mediated Preparation of Ester Derivatives Using Indium(III) Triflate and Various Alcohols

在线全文

学校读者我要写书评

暂无评论

Green and Sustainable Chemistry 2022年第1期12卷 1-8页

作者： Tomoko Mineno Daiki Takano Saika Komiya Azusa Sato Hisao Kansui Laboratory of Medicinal Chemistry Faculty of Pharmacy Takasaki University of Health and Welfare Takasaki Gunma Japan Laboratory of Organic Chemistry Faculty of Pharmaceutical Sciences Sojo University Ikeda Kumamoto Japan

Esters are known as one of the most fundamental chemical moieties and also essentially useful components, especially for medicinal agents. Herein, using benzaldehyde and its derivatives as starting materials, oxone-mediated preparation of ester derivatives in the presence of a catalytic amount of indium(III) triflate is described. Alcohols with various chain lengths, which functioned as solvents and substrates, were examined. Overall, the oxidative esterification starting with benzaldehyde derivatives possessing electron withdrawing groups proceeded smoothly and gave sufficient yields, in comparison to the reactions with the derivatives having electron donating groups.

关键词： oxone Oxidative Esterification Benzaldehyde Derivatives Ester Derivatives Indium(III) Triflate Alcohols

oxone/紫外氧化降解水中有机磷农药氧乐果的研究

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

环境污染与防治 2018年第3期40卷 256-258页

作者：郑宾国胡俊霞姚娇娇梁丽珍高军侠张旭升杨亚飞郑州航空工业管理学院土木建筑工程学院郑州市环境功能材料重点实验室河南郑州450015 黄淮学院医学院河南驻马店463000

选择了氧乐果废水的处理工艺,重点探究了oxone/紫外氧化降解氧乐果的影响因素。结果表明,oxone/紫外氧化工艺氧化降解氧乐果优于自然光照、紫外光照、oxone氧化等工艺。氧乐果初始质量浓度为10mg/L、pH=2.03、反应温度为35℃、10mmol/L ... 详细信息

选择了氧乐果废水的处理工艺,重点探究了oxone/紫外氧化降解氧乐果的影响因素。结果表明,oxone/紫外氧化工艺氧化降解氧乐果优于自然光照、紫外光照、oxone氧化等工艺。氧乐果初始质量浓度为10mg/L、pH=2.03、反应温度为35℃、10mmol/L oxone试剂用量为1.0mL时,降解20min的氧乐果降解率可达99.8%。

关键词： oxone 紫外氧化降解有机磷农药氧乐果

The Compatibility of Groups Used to Protect Phenolic Functionality during oxone-Mediated Oxidative Esterification

在线全文

学校读者我要写书评

暂无评论

Green and Sustainable Chemistry 2022年第4期12卷 83-90页

作者： Tomoko Mineno Yuki Suzuki Tomoya Nobuta Daiki Takano Hisao Kansui Laboratory of Medicinal Chemistry Faculty of Pharmacy Takasaki University of Health and Welfare Takasaki Japan Laboratory of Molecular Design Chemistry Faculty of Pharmacy Takasaki University of Health and Welfare Takasaki Japan Laboratory of Organic Chemistry Faculty of Pharmaceutical Sciences Sojo University Kumamoto Japan

Protecting groups often play an essential role in organic synthesis, particularly for multi-step synthesis or natural product total synthesis. Various protecting groups areavailable to mask the vulnerable functionality;phenolic hydroxy groups are noteworthy examples, but their stability differs when protected. Herein, the compatibility of protective phenolic functionality was investigated with the implementation of indium (III) triflate-catalyzed oxidative esterification using oxone in methanol. A wide range of protective moieties was selected and subjected to oxone-mediated oxidative esterification. For example, sulfonates were found to be sufficiently stable and inert whereas acetals were susceptible to reaction conditions. The details of this investigation are provided.

关键词： Compatibility Protecting Groups Phenolic Functionality oxone Oxidative Esterification

Investigation into Protective Groups for Anilino Functionality upon oxone-Mediated Oxidative Esterification

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Organic Chemistry 2023年第1期13卷 7-15页

作者： Tomoko Mineno Takeya Yamamoto Tomoya Nobuta Hisao Kansui Laboratory of Medicinal Chemistry Faculty of Pharmacy Takasaki University of Health and Welfare Takasaki Japan Laboratory of Molecular Design Chemistry Faculty of Pharmacy Takasaki University of Health and Welfare Takasa-ki Japan Laboratory of Organic Chemistry Faculty of Pharmaceutical Sciences Sojo University Kumamoto Japan

In the course of organic synthesis, particularly for multi-step synthesis or natural product total synthesis, the selection of appropriate protective groups for the intended functionality is crucial in order to achieve chemoselective synthetic goals. The development of many useful protective groups has been reported based on the functionality of the anilino group. Herein, we discuss our study of various protective groups and the processes we used to establish compatibility with anilino functionality via the implementation of oxone-mediated oxidative esterification in methanol. The results and the details of our experiments are reported herein.

关键词： Protective Groups Anilino Functionality oxone Aldehyde Oxidative Esterification

Catalyst Transformation in Water Oxidation with Cp*-Iridium Carbene Complexes Using oxone as Primary Oxidant

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Catalyst Transformation in Water Oxidation with Cp*-Iridium ...

热和Fe^(2+)共活化oxone法深度处理填埋污泥脱水液

中国化学会第九届全国无机化学学术会议

作者： Hui Cao Xiu-Feng Hou Department of Chemistry Fudan University

Cp*iridium complexes（Cp*=C5Me5-）have recently been shown as effective precatalysts for the oxidation of water to molecular oxygen,which is recognized as the most challenging process in the realization of artificial photosynthesis aimed at producing solar *** nature of catalytic species,however,remains a matter of debate due to oxidative transformation of the *** our investigation of a Cp*-iridium carbene catalyst（Fig 1）in water oxidation using potassium peroxymonosulfate（oxone）as primary oxidant,we found the precatalyst would evolve to a blue species when a small amount of oxone was *** addition of oxone would yield stable purple species,while previous studies on iridium-catalyzed water oxidation all pointed out the formation of blue solution as catalytic resting *** species have been proven to be homogeneous and they remain active in water *** intermediates during oxidative transformation were then analyzed.1H NMR profiles and MALDI-MS data suggested a rapid oxidation of the Cp*ligand to acetone,formic and acetic acid.1H NMR,TEM-EDX as well as MALDI-MS data indicated a continuous degradation of pyrimidyl,butyl and carbene ***-MS,XANES and 17O NMR spectroscopy data of the blue species are most consistent with an iridium（III）compound with two waters,one dioxygen and pm NHC *** purple catalytic resting species probably consists of an iridium（III）complex with three waters,one chloride and one bicarbonate ***,the presence of a small amount of iridium aqua ion oligomers was observed in the purple *** formation of more polymers and nanoparticles is likely to be inhibited by the acid environment.

关键词： water oxidation iridium oxone catalyst transformation catalytic resting state

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

应用化工 2023年第3期52卷 682-688,696页

作者：林莉峰唐晨龚晓露郗家福安莹胡维杰周振曹晶上海市政工程设计研究总院(集团)有限公司上海200092 上海电力大学环境与化学工程学院上海200090

采用热和Fe^(2+)共活化oxone法深度氧化处理填埋污泥脱水液,分析了oxone投加量、温度、pH值对有机物去除效果的影响。结果表明,该氧化体系对胡敏酸类物质具有较好的去除效果;COD降解符合准二级动力学模型,改变oxone投加量和pH值会影响... 详细信息

采用热和Fe^(2+)共活化oxone法深度氧化处理填埋污泥脱水液,分析了oxone投加量、温度、pH值对有机物去除效果的影响。结果表明,该氧化体系对胡敏酸类物质具有较好的去除效果;COD降解符合准二级动力学模型,改变oxone投加量和pH值会影响有机物基团的降解顺序。在污泥脱水液初始COD为(600±22)mg/L,温度为45℃,pH值为2,oxone投加量为17.9 mmol/L,oxone/Fe^(2+)摩尔比为50时,COD去除率达到31.2%,最终出水COD为423 mg/L,达到《污水排入城镇下水道水质标准》(GB/T 31962-2015)的A级排放标准。

关键词：填埋污泥脱水液深度处理 Fe^(2+) oxone