Condensations of Aromatic Amines with Formaldehyde in Media Containing Acid. VII. The Polymeric States and Structures of Some Anhydro-p-(alkylamino)-benzyl Alcohols
Room temperature N-alkylation of amines with alcohols under UV irradiation catalyzed by Cu–Mo/TiO<sub>2</sub>
作者:Lina Zhang、Yan Zhang、Youquan Deng、Feng Shi
DOI:10.1039/c5cy00316d
日期:——
photocatalysts for organic reactions. Here, we show the preparation and catalytic performance of a novel TiO2 (P25) supported Cu and Mo photocatalyst (Cu–Mo/TiO2) for N-alkylation of amines with alcohols under UV irradiation at room temperature. A variety of aromatic and aliphaticamines were selectively converted into the corresponding secondary amines or tertiaryamines in moderate to excellent yields
非常需要开发用于有机反应的有效的多相光催化剂。在这里,我们展示了一种新型的TiO 2(P25)负载的Cu和Mo光催化剂(Cu–Mo / TiO 2)的制备和催化性能,该光催化剂在室温下UV辐射下用醇对胺进行N烷基化。在不添加任何助催化剂(例如碱和有机配体)的情况下,将各种芳香族和脂肪族胺以中等至极好的收率选择性地转化为相应的仲胺或叔胺。值得注意的是,该催化体系在含卤素取代基的苯胺与醇的烷基化中是可行的,所需产物的产率高达95%。
Microwave-Promoted Selective Mono-N-Alkylation of Anilines with Tertiary Amines by Heterogeneous Catalysis
作者:M. Caterina Lubinu、Lidia De Luca、Giampaolo Giacomelli、Andrea Porcheddu
DOI:10.1002/chem.201002704
日期:2011.1.3
A palladium‐catalyzed N‐alkylation of anilines with tertiaryamines that occurs under heterogeneous transfer‐hydrogenation conditions has been developed (see scheme). This protocol of transamination, which uses a relatively cheap and easily recyclable heterogeneous catalyst, can be efficiently applied to different substrates and is suitable for large‐scale preparations.
Reductive Monoalkylation of Aromatic and Aliphatic Nitro Compounds and the Corresponding Amines with Nitriles
作者:Ruel Nacario、Shailaja Kotakonda、David M. D. Fouchard、L. M. Viranga Tillekeratne、Richard A. Hudson
DOI:10.1021/ol047580f
日期:2005.2.1
[reaction: see text] A simple, selective, rapid, and efficient procedure for the synthesis of secondary amines from the reductive alkylation of either aliphatic or aromatic nitro compounds and the corresponding amines is reported. Ammoniumformate is used as the hydrogen source and Pd/C as the hydrogen transfer catalyst. The reaction is carried out at room temperature. The rate differences for the preferential
Assembly of Substituted 2-Alkylquinolines by a Sequential Palladium-Catalyzed CN and CC Bond Formation
作者:Yoshio Matsubara、Saori Hirakawa、Yoshihiro Yamaguchi、Zen-ichi Yoshida
DOI:10.1002/anie.201102076
日期:2011.8.8
Diversity: A range of substituted 2‐alkylquinolines can be prepared in a general and efficient synthetic approach that employs mild reaction conditions (see scheme). The synthesis is based on a sequential palladium‐catalyzed CN and CCbondformation, followed by palladium‐catalyzed aromatization, and results in the formation of the desired compounds in one step.
catalyzed procedure for the N-arylation of simple aliphatic amines, amino alcohols and amino acids in pure water have been developed. A variety of substituted aryl iodides, bromides and electron-deficient chlorides were found to be applicable, and 1,2-disubstituted benzimidazoles could be prepared easily by a cascade amination/condensation process in this catalyticsystem.