Oxidation cascade with oxone: cleavage of olefins to carboxylic acids
摘要:
A variety of olefins is shown to be cleaved oxidatively to the corresponding acids with oxone as the reagent. The simple methodology that works well for a range of alkenes, i.e., styrenes, nitrostyrenes, stilbenes, cinnamic acids, chalcones, etc., involves heating of the reactant with oxone in acetonitrile-water mixture (1:1, v/v) at reflux. The oxidation cascade involves initial dihydroxylation followed by oxidative cleavage and oxidation of the resultant aldehydes to acids. (c) 2014 Elsevier Ltd. All rights reserved.
[EN] CONTROLLED DRUG RELEASE FROM SOLID SUPPORTS<br/>[FR] SUPPORTS SOLIDES POUR LA LIBÉRATION CONTRÔLÉE DE MÉDICAMENTS
申请人:PROLYNX LLC
公开号:WO2011140392A1
公开(公告)日:2011-11-10
The invention relates to solid supports useful in medical applications that provide controlled release of drugs, such as peptides, nucleic acids and small molecules. The drugs are covalently coupled to the solid support through a linkage that releases the drug or a prodrug through controlled beta elimination.
[EN] CONTROLLED RELEASE FROM MACROMOLECULAR CONJUGATES<br/>[FR] LIBÉRATION CONTRÔLÉE À PARTIR DE CONJUGUÉS MACROMOLÉCULAIRES
申请人:PROLYNX LLC
公开号:WO2011140393A1
公开(公告)日:2011-11-10
The invention relates to conjugates of macromolecular carriers and drugs comprising linkers that release the drug or a prodrug through rate-controlled beta-elimination, and methods of making and using the conjugates.
Iron and Phenol Co-Catalysis for Rapid Synthesis of Nitriles under Mild Conditions
作者:Hong Meng、Sen Gao、Meiming Luo、Xiaoming Zeng
DOI:10.1002/ejoc.201900831
日期:2019.7.31
Using inexpensive and environmentally benign FeCl3 and 2,6‐di‐tert‐butyl‐4‐methylphenol as cooperative catalyst, benzoyl aldehyde oximes converted into nitriles in excellent yields within minutes under mild reaction conditions.
Stable and reusable nanoscale Fe<sub>2</sub>O<sub>3</sub>-catalyzed aerobic oxidation process for the selective synthesis of nitriles and primary amides
作者:Kathiravan Murugesan、Thirusangumurugan Senthamarai、Manzar Sohail、Muhammad Sharif、Narayana V. Kalevaru、Rajenahally V. Jagadeesh
DOI:10.1039/c7gc02627g
日期:——
nitriles and amides from easily available starting materials using cost-effective catalysts and green reagents is highly desired. In this regard, herein we report the nanoscale iron oxide-catalyzed environmentally benign synthesis of nitriles and primary amides from aldehydes and aqueous ammonia in the presence of 1 bar O2 or air. Under mild reaction conditions, this iron-catalyzed aerobic oxidation process
在腈纶或酰胺基团形式的功能化分子中可持续引入氮基是至关重要的,因为在许多生命科学分子,天然产物和材料中都发现了含氮基序。因此,非常需要使用具有成本效益的催化剂和绿色试剂从容易获得的起始原料合成腈和酰胺的方法。就这一点而言,本文报道了在1 bar O 2的存在下,由醛和氨水进行的纳米级氧化铁催化的腈和伯酰胺的环境友好合成。或空气。在温和的反应条件下,该铁催化的需氧氧化过程继续进行,以合成功能化且结构多样的芳族,脂族和杂环腈。另外,应用该铁基方案,还已经在水介质中制备了伯酰胺。
Selective preparation of non-symmetrically substituted divinylbenzenes by palladium-catalysed arylations of alkenes with bromobenzoic acid derivatives
作者:Alwyn Spencer
DOI:10.1016/0022-328x(84)80097-2
日期:1984.4
three bromobenzoyl chlorides react only as aroyl chlorides. Using two different alkenes a given non-symmetrically substituted divinylbenzene can be prepared by four different routes, allowing for an optimum choice of synthesis path. Substituent effects in the aromatic derivatives and the reactivity of the alkenes in arylation are the principal features to be taken into account. The reaction pathway can