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Уважаемые коллеги! Помогите, пожалуйста, достать статьи:
1. Synthesis of phosphonium salts under microwave activation — Leaving group and phosphine substituents effects. Ján Cvengros, Stefan Toma, Sylvain Marque, and André Loupy
Can. J. Chem. 82(9): 1365–1371 (2004)

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http://dx.doi.org/10.1139/v04-103

2. Sample preparation. Yi Chena, Zhenpeng Guo, Xiaoyu Wang, Changgui Qiu
Journal of Chromatography A. Volume 1184, Issues 1-2, 14 March 2008, Pages 191-219

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http://dx.doi.org/10.1016/j.chroma.2007.10.026

3. Improvements in Diels–Alder cycloadditions with some acetylenic compounds under solvent-free microwave-assisted conditions: experimental results and theoretical approaches. André Loupy, François Maurel, Andrea Sabatié-Gogová
Tetrahedron. Volume 60, Issue 7, 9 February 2004, Pages 1683-1691

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http://dx.doi.org/10.1016/j.tet.2003.11.042

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