Cu-Catalyzed Carbon-Heteroatom Coupling Reactions under Mild Conditions Promoted by Resin-Bound Organic Ionic Bases
作者:Yao-Bing Huang、Chu-Ting Yang、Jun Yi、Xiao-Jian Deng、Yao Fu、Lei Liu
DOI:10.1021/jo101917x
日期:2011.2.4
is slightly better than that of the corresponding Cs salts in Cu-catalyzed C−Ncross-couplings, while the tetraalkylphosphonium-type RBOIBs are significantly better than all the inorganic bases. With these newly developed RBOIBs, room-temperature Cu-catalyzed C−N coupling with various nonactivated aryliodides and even aryl bromides can be readily accomplished. Moreover, RBOIBs can be easily recycled
Ligand-free CuSO4-Catalyzed C-N Coupling Reaction of Aryl Halides with Alkylamines or N-heterocycles in Aqueous Solution System
作者:Hua Yang、Xiuli Zhang、Jingyu Si
DOI:10.14233/ajchem.2013.oh47
日期:——
during the repetitive use of these catalyst systems. Therefore, catalytic systems without ligands are of special interest. Cu(I)catalyzed C-Ncross-couplingreaction was reported using organic anion bases, such as quaternary ammonium hydroxide, which can contribute to form a homogeneous catalytic system. In present work, we report that C-N coupling reaction of aryl iodides and bromides with alkyl amines
OXIDATIVE DYEING COMPOSITIONS COMPRISING AN 1-HEXYL/HEPTYL-4,5-DIAMINOPYRAZOLE AND A BENZO[1,3]DIOXOL-5-YLAMINE AND DERIVATIVES THEREOF
申请人:Noxell Corporation
公开号:EP2678079B1
公开(公告)日:2017-08-02
Oxidative Dyeing Compositions Comprising an 1-Hexyl/Heptyl-4,5-diaminopyrazole and a Benzo[1,3]dioxol-5-ylamine and Derivatives Thereof
申请人:LIM Muill
公开号:US20120210521A1
公开(公告)日:2012-08-23
A composition for the oxidative dyeing of keratin fibers, in particular human keratin fibers, comprising (A) a 1-hexyl/heptyl-4,5-diaminopyrazole compound of the general formula (I), its physiologically compatible water-soluble salt, or mixtures thereof; and (B) a benzo[1,3]dioxol-5-ylamine compound of the general formula (II), its physiologically compatible water-soluble salt, or mixtures thereof; and (C) an oxidizing agent.
wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
and R
7
are as defined herein and a=1 or 2.