Dimethylamination of Primary Alcohols Using a Homogeneous Iridium Catalyst: A Synthetic Method for <i>N</i>,<i>N</i>-Dimethylamine Derivatives
作者:Jaeyoung Jeong、Ken-ichi Fujita
DOI:10.1021/acs.joc.0c02896
日期:2021.3.5
alcohols using aqueous dimethylamine in the absence of additional organic solvents has been developed. The reaction proceeds via borrowing hydrogenprocesses, which are atom-efficient and environmentally benign. An iridiumcatalyst bearing an N-heterocycliccarbene (NHC) ligand exhibited high performance, without showing any deactivation under aqueous conditions. In addition, valuable N,N-dimethylamine
Copper-Catalyzed <i>N</i>- and <i>O</i>-Alkylation of Amines and Phenols using Alkylborane Reagents
作者:Shunsuke Sueki、Yoichiro Kuninobu
DOI:10.1021/ol400323z
日期:2013.4.5
in the presence of a catalytic amount of copper(II) acetate Cu(OAc)2 and di-tert-butyl peroxide, a cross-coupling reaction proceeded and alkylated amines were obtained in good to excellent yields. Phenols are also applicable for this reaction, and the corresponding alkyl aryl ethers were produced.
Design and Synthesis of Imidazoline Derivatives Active on Glucose Homeostasis in a Rat Model of Type II Diabetes. 2. Syntheses and Biological Activities of 1,4-Dialkyl-, 1,4-Dibenzyl, and 1-Benzyl-4-alkyl-2-(4‘,5‘-dihydro-1‘<i>H</i>- imidazol-2‘-yl)piperazines and Isosteric Analogues of Imidazoline
imidazoline ring and its replacement by isosteric heterocycles were carried out, proceeding from PMS 812, to evaluate their influence on the antidiabetic activity. The importance of the distance between the imidazoline ring and the piperazine skeleton was studied third. Finally, the influence of the N-benzyl moiety was also analyzed compared to a direct N-phenyl substitution. The pharmacological evaluation
[EN] SUBSTITUTED ARYLALKANOIC ACID DERIVATIVE AND USE THEREOF<br/>[FR] DERIVE D'ACIDE ARYLALCANOIQUE SUBSTITUE ET SON UTILISATION
申请人:ASAHI KASEI PHARMA CORP
公开号:WO2005016862A1
公开(公告)日:2005-02-24
A compound represented by the formula (I)[In the formula, Link represents a saturated or unsaturated straight hydrocarbon chain having 1 to 3 carbon atoms, C2 to C6 in the aromatic ring (E) independently represent a ring-constituting carbon atom, one of the ring-constituting carbon atoms may be replaced with V, V represents nitrogen atom, or carbon atom substituted with Zx, Zx represents a saturated alkyl group having 1 to 4 carbon atoms and the like, Rs represents -D-Rx etc., D represents a single bond, oxygen atom and the like, Rx represents a saturated alkyl group having 3 to 8 carbon atoms and the like, AR represents a partially unsaturated or completely unsaturated condensed bicyclic carbon ring or a heterocyclic ring, and Y represents hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms and the like] or a salt thereof. A compound having prostaglandin production-suppressing action and leukotriene production-suppressing action is provided.
Direct hydroxyethylation of amines by carbohydrates <i>via</i> ruthenium catalysis
作者:Le Jia、Mohamed Makha、Chen-Xia Du、Zheng-Jun Quan、Xi-Cun Wang、Yuehui Li
DOI:10.1039/c9gc01195a
日期:——
efficient and halogen-free catalytic methodology for the synthesis of β-aminoalcoholsfrom aromatic amines and biomass-derived carbohydrates is demonstrated for the first time. The activation of C5/C6 sugars by a ruthenium catalyst selectively generates the C2 alkylating reagent glycolaldehyde. The transformation involves metal-catalyzed hydrogenborrowing for the reduction of the imine intermediate. A series