New synthetic routes for N-substituted 1,n-diamines. II. Synthesis of selectively N-substituted tetra- and pentamethylenediamines from ω-alkanoic acid derivatives
作者:María A. Ramírez、María V. Corona、Gisela Ortiz、Alejandra Salerno、Isabel A. Perillo、María M. Blanco
DOI:10.1016/j.tetlet.2011.01.088
日期:2011.3
for the synthesis of selectively N-substituted tetra- and pentamethylenediamines 1 (n = 4,5) is described. The method uses N-substituted ω-haloalkanamides 2 as precursors and involves the microwave-promoted conversion into ω-azidocarboxamides 3 and later the reduction of both azido and carboxamide groups with diborane.
An Efficient Synthesis of <i>N</i>-Arylputrescines and Cadaverines
作者:Liliana Orelli、Natalia Link、Jimena Díaz
DOI:10.1055/s-0028-1087817
日期:——
We present a two-step, general synthesis of N-arylputrescines and cadaverines, by cesium carbonate mediated alkylation of anilines with Ï-chloronitriles and subsequent reduction. The cesium-mediated alkylation shows remarkable selectivity towards the monoalkylation product. The method is straightforward and leads to satisfactory global yields.