Synthesis of <i>o</i>-Carboxyarylacrylic Acids by Room Temperature Oxidative Cleavage of Hydroxynaphthalenes and Higher Aromatics with Oxone
作者:Keshaba Nanda Parida、Jarugu Narasimha Moorthy
DOI:10.1021/acs.joc.5b00292
日期:2015.8.21
A simple procedure for the synthesis of a variety of o-carboxyarylacrylic acids has been developed with Oxone (2KHSO5·KHSO4·K2SO4); the oxidation reaction involves the stirring of methoxy/hydroxy-substituted naphthalenes, phenanthrenes, anthracenes, etc. with Oxone in an acetonitrile–water mixture (1:1, v/v) at rt. Mechanistically, the reaction proceeds via initial oxidation of naphthalene to o-quinone
已经用Oxone(2KHSO 5 ·KHSO 4 ·K 2 SO 4)开发了一种简单的合成多种邻-羧基芳基丙烯酸的方法。氧化反应包括在室温下将乙氧基/羟基取代的萘,菲,蒽等与Oxone在乙腈-水混合物(1:1,v / v)中搅拌。从机理上讲,该反应是通过将萘初始氧化为邻醌而进行的,该邻苯醌会裂解成相应的邻羧基芳基丙烯酸。发现高级芳族化合物产生衍生自最初形成的邻-羧基芳基丙烯酸的羧甲基内酯。
ROOT CANAL TREATMENT MATERIAL AND ROOT CANAL TREATMENT KIT
申请人:FUJIFILM Corporation
公开号:US20180296445A1
公开(公告)日:2018-10-18
The present invention provides a root canal treatment material having excellent curability in a moist environment and a root canal treatment kit containing the root canal treatment material. The root canal treatment material of the present invention includes: at least one compound (A) selected from the group consisting of a compound represented by Formula (1), a compound represented by Formula (2), and a compound represented by Formula (3); an acidic group-containing monomer (B); and a polymerization initiator (C).
Chromium(VI) Based Oxidants; II<sup>1</sup>. Zinc Dichromate Trihydrate: A Versatile and Mild Reagent for the Oxidation of Organic Compounds
作者:H. Firouzabadi、A. R. Sardarian、H. Moosavipour、G. M. Afshari
DOI:10.1055/s-1986-31585
日期:——
Zinc dichromate trihydrate is an easily prepared, stable, and cheap reagent for the efficient oxidation of organic compounds in aprotic organic solvents at room temperature.
Attempts to prepare aromatic O-acyl-hydroxylamines—I
作者:T.R. Juneja、H. Dannenberg
DOI:10.1016/0040-4020(75)80072-x
日期:1975.1
products. Ten of these were identified and together account for 70% of the total yield. The proposed reaction mechanism implicates the corresponding O-acetyl-hydroxylamine 15 as an intermediate. Attempts to prepare O-esters or O-ethers of aromatic hydroxylamines by dehydrogenation, with quinones, of the corresponding oximino-derivatives of oxo-1,2,3,4-tetrahydro-naphthalene and oxo-1,2,3,4-tetrahydro-phenanthrene
[EN] PRODUCION METHOD OF PROPYLENE OXIDE<br/>[FR] PROCÉDÉ DE PRODUCTION D'OXYDE DE PROPYLÈNE
申请人:SUMITOMO CHEMICAL CO
公开号:WO2009119901A1
公开(公告)日:2009-10-01
A production method of propylene oxide, wherein hydrogen, oxygen and propylene are reacted by a multistep process in a mixed solvent of acetonitrile and water, in the presence of a layered precursor of Ti-MWW and a catalyst comprising palladium supported on a carrier.