Synthesis of 2-Pyridones and Iminoesters via Rh(III)-Catalyzed Oxidative Coupling between Acrylamides and Alkynes
摘要:
Catalytic oxidative coupling between acrylamides and alkynes was achieved using 0.5 mol % loading of [RhCp*Cl-2](2) with Cu(OAc)(2) as an oxidant. 2-Pyridones, iminoesters, and substituted indoles could be obtained as a result of the electronic and steric effects of the substituents in the acrylamides.
Continuous Method for Producing Amides of Ethylenically Unsaturated Carboxylic Acids
申请人:Krull Matthias
公开号:US20110089020A1
公开(公告)日:2011-04-21
The invention relates to a continuous method for producing amides, according to which at least one carboxylic acid of formula (I) R
3
-COON (I), wherein R
3
is an optionally substituted alkenyl group comprising between 2 and 4 carbon atoms, is reacted with at least one amine of formula (II) HNR
1
R
2
(II), wherein R
1
and R
2
are independently hydrogen or a hydrocarbon radical comprising between 1 and 100 C atoms, to form an ammonium salt and/or a Michael adduct, and said ammonium salt is then reacted to form a carboxylic acid amide. under microwave irradiation in a reaction pipe, the longitudinal axis of the pipe being oriented in the direction of propagation of the microwaves of a monomode microwave applicator.
Catalytic Dicyanative 5-exo- and 6-endo-Cyclization Triggered by Cyanopalladation of Alkynes
作者:Shigeru Arai、Yuka Koike、Atsushi Nishida
DOI:10.1002/adsc.200900813
日期:2010.3.22
A stereoselective dicyanative 5‐exo‐ and 6‐endo‐cyclization using various enynes has been investigated. The mode of cyclization is critically controlled by the structure of the substrates. For example, N‐allyl derivatives prefer 5‐exo‐cyclization, while methacryloyl amides are transformed to the corresponding lactams with tetra‐substituted carbons at the alpha‐position via 6‐endo‐cyclization. Both
KONTINUIERLICHES VERFAHREN ZUR HERSTELLUNG VON AMIDEN ETHYLENISCH UNGESÄTTIGTER CARBONSÄUREN
申请人:Clariant Finance (BVI) Limited
公开号:EP2274273A1
公开(公告)日:2011-01-19
[DE] KONTINUIERLICHES VERFAHREN ZUR HERSTELLUNG VON AMIDEN ETHYLENISCH UNGESÄTTIGTER CARBONSÄUREN<br/>[EN] CONTINUOUS METHOD FOR PRODUCING AMIDES OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS<br/>[FR] PROCÉDÉ CONTINU UTILISÉ POUR PRODUIRE DES AMIDES D'ACIDES CARBOXYLIQUES INSATURÉS ÉTHYLÉNIQUEMENT
申请人:CLARIANT INT LTD
公开号:WO2009121486A1
公开(公告)日:2009-10-08
Verfahren zur Herstellung tertiärer Amide niederer aliphatischer Carbonsäuren Gegenstand der Erfindung ist ein kontinuierliches Verfahren zur Herstellung von Amiden, indem mindestens eine Carbonsäure der Formel (I) R3-COOH (I) worin R3 für eine gegebenenfalls Substituierte Alkenylgruppe mit 2 bis 4 Kohlenstoffatomen steht, mit mindestens einem Amin der Formel (Il) HNR1R2 (II) worin R1 und R2 unabhängig voneinander für Wasserstoff oder einen Kohlenwasserstoffrest mit 1 bis 100 C-Atomen stehen, zu einem Ammoniumsalz und/oder Michael-Addukt umgesetzt wird und dieses Ammoniumsalz nachfolgend unter Mikrowellenbestrahlung in einem Reaktionsrohr, dessen Längsachse sich in der Ausbreitungsrichtung der Mikrowellen eines Monomode-Mikrowellenapplikators befindet, zum Carbonsäureamid umgesetzt wird.
Synthesis of 2-Pyridones and Iminoesters via Rh(III)-Catalyzed Oxidative Coupling between Acrylamides and Alkynes
作者:Yan Su、Miao Zhao、Keli Han、Guoyong Song、Xingwei Li
DOI:10.1021/ol102306c
日期:2010.12.3
Catalytic oxidative coupling between acrylamides and alkynes was achieved using 0.5 mol % loading of [RhCp*Cl-2](2) with Cu(OAc)(2) as an oxidant. 2-Pyridones, iminoesters, and substituted indoles could be obtained as a result of the electronic and steric effects of the substituents in the acrylamides.