Glycerol as a Building Block for Prochiral Aminoketone,<i>N</i>-Formamide, and<i>N</i>-Methyl Amine Synthesis
作者:Xingchao Dai、Jabor Rabeah、Hangkong Yuan、Angelika Brückner、Xinjiang Cui、Feng Shi
DOI:10.1002/cssc.201600972
日期:2016.11.23
Prochiral aminoketones are key intermediates for the synthesis of optically active amino alcohols, and glycerol is one of the main biomass‐based alcohols available in industry. In this work, glycerol was catalytically activated and purposefully converted with amines to generate highly valuable prochiral aminoketones, as well as N‐formamides and N‐methyl amines, over CuNiAlOx catalyst. The catalyst structure
Electrochemical, Iodine-Mediated α-CH Amination of Ketones by Umpolung of Silyl Enol Ethers
作者:Julia Strehl、Gerhard Hilt
DOI:10.1021/acs.orglett.0c02068
日期:2020.8.7
oxidative Umpolung reaction of silyl enol ethers utilizing simple iodide salts for the synthesis of α-amino ketones is described. The products were isolated in excellent yields of up to 100%, and various functionalized starting materials were accepted in an undivided electrochemical cell design. Moreover, a sensitivity assessment to ensure an improved reproducibility of the reaction and cyclic voltammetry
The invention concerns a water soluble compound of formula (a) wherein: A represents naphthyl or phenyl; and Ar
1
and Ar
2
independently represent a saturated or aromatic carbocyclic group; X
a
, X
b
are independently selected among an amino group, an ammonium group and an amino group modified by a linear polyoxyalkylene chain, provided that at least one of X
a
and X
b
represents ammonium or modified amino.
Peptides and peptide-targeted multimeric contrast agents are described, as well as methods of making and using the contrast agents.
本文描述了肽和肽靶向多聚对比剂,以及制备和使用对比剂的方法。
Use Of Aminoacetones And Salts Thereof As Bleaching Boosters For Peroxygen Compounds
申请人:Reinhardt Gerd
公开号:US20090289221A1
公开(公告)日:2009-11-26
The use is claimed of aminoacetones or salts thereof of the general formulae (I) and (II) in which R
1
and R
2
are each independently hydrogen, C
1
-C
22
-alkyl, C
2
-C
22
-alkenyl, phenyl or C
5
-C
8
-cycloalkyl, or R
1
and R
2
, together with the nitrogen atom, form a 5-, 6- or 7-membered ring system, X′ is anion, for example chloride, bromide, iodide, toluenesulfonate, benzenesulfonate, cumenesulfonate, mesitylsulfonate, sulfate, hydrogensulfate, acetate, fatty acid anion or anion of polycarboxylates, as a bleaching booster for inorganic peroxygen compounds in the pH range from 7 to 9.