Catalysis of aldehyde and imine silylcyanation by platinum and palladium NCN-pincer complexes
摘要:
The room temperature addition of trimethylsilylcyanide to aromatic and aliphatic aldehydes to give the corresponding cyanohydrins is efficiently catalysed by 1 mol% of ((2,6-bis(N-cyclohexyl)imino)phenyl)aquoplatinum(II) trifluoromethanesulfonate 1a. This methodology is also applicable to the addition of trimethylsilylcyanide to Schiff bases resulting in the formation of alpha-amino nitriles. (C) 2003 Elsevier Ltd. All rights reserved.
Cu(OTf)2 or Et3N-catalyzed three-component condensation of aldehydes, amines and cyanides: a high yielding synthesis of α-aminonitriles
作者:Abhimanyu S. Paraskar、Arumugam Sudalai
DOI:10.1016/j.tetlet.2006.06.008
日期:2006.8
Copper(II) triflate or Et3N have been found to catalyze, under ambient conditions, the addition of a cyanide anion, such as trimethylsilyl cyanide or acetone cyanohydrin, onto in situ generated imines, furnishing α-aminonitriles in excellent yields.
A concise, straightforward and efficient method has been developed for the synthesis of α-aminonitriles by an one-pot three-component condensation of aldehydes or ketones, amines and trimethylsilyl cyanide catalyzed by MgI2 etherate under solvent-free conditions. This protocol has some advantages such as mild reaction condition, simple work-up, short reaction time and high product yields.
One-pot, solvent-free synthesis of α-aminonitriles under catalysis by magnesium bromide ethyl etherate
作者:Mohammad M Mojtahedi、M Saeed Abaee、Hassan Abbasi
DOI:10.1139/v06-024
日期:2006.3.1
the synthesis of α-aminonitriles from aldehydes, amines, and trimethylsilyl cyanide using a catalytic amount of magnesiumbromide ethyl etherate in the absence of solvent. Rapid formation of products is observed at room temperature in a one-pot procedure under very mild conditions giving excellent yields of the title compounds.Key words: catalyzed Strecker's reaction, α-aminonitriles, magnesium bromide
Superparamagnetic iron oxide as an efficient catalyst for the one-pot, solvent-free synthesis of α-aminonitriles
作者:Mohammad M. Mojtahedi、M. Saeed Abaee、Tooba Alishiri
DOI:10.1016/j.tetlet.2009.02.199
日期:2009.5
Superparamagnetic Fe3O4 is shown to act as a very efficient catalyst for the one-pot, three-component synthesis of alpha-aminonitriles from aldehydes, amines, and TMSCN. The catalyst is easily recovered by the use of an external magnet and reused in several reactions without any noticeable loss of activity. The products are obtained rapidly at room temperature in good purity upon separation of the catalyst and evaporation of the volatiles of the reaction mixture. (C) 2009 Elsevier Ltd. All rights reserved.
Catalysis of aldehyde and imine silylcyanation by platinum and palladium NCN-pincer complexes
作者:John S Fossey、Christopher J Richards
DOI:10.1016/j.tetlet.2003.09.201
日期:2003.12
The room temperature addition of trimethylsilylcyanide to aromatic and aliphatic aldehydes to give the corresponding cyanohydrins is efficiently catalysed by 1 mol% of ((2,6-bis(N-cyclohexyl)imino)phenyl)aquoplatinum(II) trifluoromethanesulfonate 1a. This methodology is also applicable to the addition of trimethylsilylcyanide to Schiff bases resulting in the formation of alpha-amino nitriles. (C) 2003 Elsevier Ltd. All rights reserved.