1)Tetrahedron Letters
Volume 46, Issue 31, Pages 5229-5232
Akhilesh K. Vermaa, Rupesh Kumara, Preeti Chaudharya, Amit Saxenab, Ravi Shankarb, Subho Mozumdarb and Ramesh Chandraa,
Cu-nanoparticles: a chemoselective catalyst for the aza-Michael reactions of N-alkyl- and N-arylpiperazines with acrylonitrile
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http://dx.doi.org/10.1016/j.tetlet.2005.05.1082)Tetrahedron Letters
Volume 47, Issue 46, Pages 8049-8053
Mazaahir Kidwaia, Vikas Bansala, Amit Saxenab, Swati Aerryb and Subho Mozumdarb
Cu-Nanoparticles: efficient catalysts for the oxidative cyclization of Schiffs’ bases
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http://dx.doi.org/10.1016/j.tetlet.2006.09.066 Спасибо.