Reaction of phenyl azide with alkenes in the presence of AlCl3 gives an aziridiniumâAlCl3 complex viaan azideâAlCl3 complex; this reaction is followed by ring-opening reactions of the aziridiniumâAlCl3 complex to give N-allylanilines and/or N-phenyl-β-chloroamines after work-up with aqueous Na2CO3, but the reaction with cis-cyclo-octene yields a novel aziridine, 9-phenyl-9-azabicyclo[6.1.0]nonane after the work-up.
1-Isopropylallyloxycarbonyl (IPAoc) as a protective group of amines and its deprotection catalysed by palladium-phosphine complex
作者:Ichiro Minami、Masami Yuhara、Jiro Tsuji
DOI:10.1016/s0040-4039(00)96195-1
日期:——
As a newprotectivegroup of amines, 1-isopropylallyloxycarbonyl (IPAoc) group was developed. IPAoc group can be removed by treatment with a palladium-phosphine catalyst forming carbon dioxide and 4-methyl-1,3-pentadiene by the decarboxylation and β-hydrogen elimination of (π-1-isopropylallyl)-palladium intermediate under neutral conditions. The present protection-deprotection was applied to a one-pot
Rhodium-Catalyzed Regioselective Amination of Secondary Allylic Trichloroacetimidates with Unactivated Aromatic Amines
作者:Jeffrey S. Arnold、Robert F. Stone、Hien M. Nguyen
DOI:10.1021/ol1019025
日期:2010.10.15
The use of unactivated aromatic amines in the rhodium-catalyzed regioselective amination of secondary allylic trichloroacetimidates is explored. The desired N-arylamines are obtained in high yields and regioselectivity, favoring the branched amination products. The presence of the trichloroacetimidate leaving group was found to be critical for successful regioselective amination reactions with unactivated