Development of a General Non-Noble Metal Catalyst for the Benign Amination of Alcohols with Amines and Ammonia
作者:Xinjiang Cui、Xingchao Dai、Youquan Deng、Feng Shi
DOI:10.1002/chem.201203417
日期:2013.3.11
The N‐alkylation of amines or ammonia with alcohols is a valuable route for the synthesis of N‐alkyl amines. However, as a potentially clean and economic choice for N‐alkyl amine synthesis, non‐noble metal catalysts with high activity and good selectivity are rarely reported. Normally, they are severely limited due to low activity and poor generality. Herein, a simple NiCuFeOx catalyst was designed
METHOD FOR PRODUCING N-SUBSTITUTED AMINE COMPOUNDS THROUGH CATALYZED ALKYLATION
申请人:Chinese Academy of Sciences Lanzhou Institute of Chemical Physics,
公开号:US20140039181A1
公开(公告)日:2014-02-06
The invention relates to a method for producing a N-substituted amine compound by catalyzed alkylation. The method uses amine and alcohol or two kinds of amines as the reaction materials, employs composite metal oxides catalyst at a reaction temperature of 80-180° C. to catalyze the reaction for 6-36 hours, so as to produce the N-substituted amine compound. The reaction condition of the method of the invention is relatively moderate, using a catalyst made of cheap non-noble metals, which is non-caustic and easy to be separated and reused. The reaction does not need any medium and has relatively high conversion rate and selectivity.
Cadmium diacetate dihydrate [Cd(OAc)2⋅2 H2O] in combination with ethylene glycol catalyzes efficiently the CN cross-coupling of amines with aryliodides by a benzyne mechanism. Alkyl, aryl and heterocyclic amines are compatible with this system affording the aminated products in high to excellent yield.
Abstract A practical, rapid, and efficient reaction using microreactors for the direct N-alkylation from anilinederivatives and alkyl dihalides has been achieved in the presence of aqueous potassium carbonate at an elevated temperature. This improved synthetic methodology provides a straightforward microfluid approach to the synthesis of a variety of N-aryl azacycloalkanes. GRAPHICAL ABSTRACT
Synthesis of sterically hindered 1-arylpyrrolidines and 1-arylpiperidines by condensation of primary aromatic amines with cyclic ethers or diols
作者:Robert E. Walkup、Scott Searles
DOI:10.1016/s0040-4020(01)83473-6
日期:1985.1
1-(-'-dialkylphenyl)- pyrrolidines and -piperidines were prepared by the gas phase alumina mediated condensation of tetrahydrofuran (THF), tetrahydropyran (THP) or the corresponding diols with primary aromatic amines in fair to high yield. This methodology can also be used for the synthesis of 1-phenylhexahydroazepine from aniline. A mechanistic interpretation of the catalytic action of alumina is presented