Iron-Catalyzed Aerobic Oxidation of Aldehydes: Single Component Catalyst and Mechanistic Studies
作者:Xingguo Jiang、Yizhan Zhai、Junyu Chen、Yulin Han、Zheng Yang、Shengming Ma
DOI:10.1002/cjoc.201700576
日期:2018.1
An aerobicoxidation of aldehydes towards carboxylic acids in MeCN using 1 atm of pure oxygen or oxygen in air as the oxidant and a catalytic amount of single componentcatalyst, Fe(NO3)3·9H2O, has been developed. Carboxylic acids with different synthetically useful functional groups were obtained at room temperature. Two mechanistic pathways have been proposed based on isotopic labeling, NMR monitoring
已开发出使用1个大气压的纯氧或空气中的氧气作为氧化剂,并催化量的单组分催化剂Fe(NO 3)3 · 9H 2 O催化将MeCN中的醛类氧化为羧酸的方法。在室温下获得具有不同的合成有用的官能团的羧酸。基于同位素标记,NMR监测和对照实验,已经提出了两种机理途径。该反应的实用性已通过使用纯氧气或约30 mL / min的气流进行了数个50 mmol规模的反应来证明。
ORGANIC DEUTERIUM COMPOUNDS: XIX. SYNTHESIS OF SOME DEUTERATED LAURIC ACIDS AND THEIR METHYL ESTERS
作者:M. Elaine Isabelle、L. C. Leitch
DOI:10.1139/v58-063
日期:1958.3.1
The synthesis of lauric acids deuterated in the carboxyl, the terminal methyl, and the α-methylene groups and in various combinations of these is described. The methyl and methyl-d3 esters of each of the acids were also prepared.Two further examples of homolytic halide addition to olefins are reported.The reaction between alkyl halides and silver acetylides is described. A mechanism involving a new
The present invention provides a device for modifying an atmosphere in proximity to the device, the device comprising a sachet comprising a semipermeable material, and a composition including a mixture of acetylsalicylic acid and sodium bicarbonate contained within a cavity of the sachet. The invention further provides methods for modifying an atmosphere comprising placing a mixture of a carboxylic acid and a base in the atmosphere, wherein the atmosphere has a sufficient level of water vapor such that, upon contact of the water vapor with the mixture, carbon dioxide is produced.
A method and means for enhancing the inner environment of a package containing perishable merchandise include taking a closable package containing perishable merchandise and placing in the package a multi-layered sheet including a plurality of layers comprised of moisture absorbing materials to absorb any residual moisture emanating from the perishable merchandise. The multi-layered sheet includes a quantity of CO
2
generating material incorporated therein. The CO
2
generating material is exposable to humidity and any residual moisture within the package and any moisture absorbing material to allow the CO
2
generating material to emit an atmosphere of CO
2
within the package from exposure to moisture within the air in the package, and to absorb any residual moisture in the package.
一种用于改善装有易腐商品的包装内部环境的方法和装置,包括取一个装有易腐商品的可封闭包装,并在包装内放置一个多层薄片,该多层薄片包括由吸湿材料组成的多层,以吸收易腐商品散发出的任何残余湿气。多层板包括一定量的 CO
2
生成材料。二氧化碳
2
生成材料可暴露于湿度、包装内的任何残留湿气以及任何吸湿材料中,使 CO
2
生成材料释放出二氧化碳气体。
2
并吸收包装内的任何残留湿气。
DEJARLAIS W. J.; EMKEN E. A., SYNTH. COMMUN., 1980, 10, NO 9, 653-660