A New Atom-Economical and Selective Synthesis of Secondary and Tertiary Alkylamines by Means of Cp*Iridium Complex Catalyzed Multiple N-Alkylation of Ammonium Salts with Alcohols without Solvent
Highly Efficient Heterogeneous Gold-catalyzed Direct Synthesis of Tertiary and Secondary Amines from Alcohols and Urea
作者:Lin He、Yue Qian、Ran-Sheng Ding、Yong-Mei Liu、He-Yong He、Kang-Nian Fan、Yong Cao
DOI:10.1002/cssc.201100581
日期:2012.4
Urea, the white gold: The efficientsynthesis of tertiary and secondaryamines is achieved by heterogeneous gold‐catalyzed direct amination of stoichiometric alcohols with urea in good to excellent yields. Via a hydrogen autotransfer pathway, the reactions of primary alcohols with urea give tertiaryamines exclusively, while secondaryalcohols selectively afford secondaryamines.
synthesis of secondary and tertiaryamines has been achieved by means of Cp*Ir-catalyzed multialkylation of ammonium salts with alcohols without solvent: the reactions of ammonium acetate with alcohols gave tertiaryamines exclusively, while those of ammonium tetrafluoroborate afforded secondary amines selectively. Using this method, secondary 5- and 6-membered cyclic amines were synthesized from ammonium
Ruthenium-catalyzed Formation of Tertiary Amines from Nitriles and Alcohols
作者:Saiwen Liu、Ru Chen、Guo-Jun Deng
DOI:10.1246/cl.2011.489
日期:2011.5.5
A ruthenium-catalyzed tertiary-amine formation was developed using the borrowing hydrogen strategy. Various tertiaryamines were obtained efficiently fromnitriles and primary alcohols. Two possibl...
使用借氢策略开发了钌催化的叔胺形成。从腈和伯醇中可以有效地获得各种叔胺。两种可能...
A New Atom-Economical and Selective Synthesis of Secondary and Tertiary Alkylamines by Means of Cp*Iridium Complex Catalyzed Multiple N-Alkylation of Ammonium Salts with Alcohols without Solvent
A new atom-economical and selective synthetic method for secondary and tertiary alkylamines has been achieved by means of (pentamethylcyclopentadienyl)iridium (Cp*Ir) complex catalyzed multiple N-alkylations of ammonium salts with primary and secondary alcohols without solvent.
Direct oxidative conversion of alcohols and amines to nitriles with molecular iodine and DIH in aq NH3
作者:Shinpei Iida、Hideo Togo
DOI:10.1016/j.tet.2007.05.106
日期:2007.8
Simple and high-yield procedures for the direct oxidative conversion of various primary alcohols, and primary, secondary, and tertiary amines to the corresponding nitriles were successfully carried out with molecular iodine in aq ammonia and 1,3-diiodo-5,5-dimethylhydantoin in aq NH3, respectively.