+++Tetrahedron and Tetr. Lett., спасибо nikolay_ap

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Здравствуйте уважаемые коллеги! Помогите, пожалуйста, найти несколько статей на ScienceDirect:
1. Alam, M. Muhajid; Varala, Ravi; Adapa, Srinivas R. Conjugate addition of indoles and thiols with electron-deficient olefins catalyzed by Bi(OTf)3 // Tetrahedron Letters. 2003. Vol. 44. N. 27. P. 5115 – 5119.

DOI:

http://dx.doi.org/10.1016/S0040-4039(03)01089-X

2. Singh, Pradeep K.; Bisai, Alakesh; Singh, Vinod K. Enantioselective Friedel–Crafts alkylation of indoles with nitroalkenes catalyzed by a bis(oxazoline)–Cu(II) complex // Tetrahedron Letters. 2007. Vol. 48. N 7. P. 1127 – 1129.

DOI:

http://dx.doi.org/10.1016/j.tetlet.2006.12.081

3. Lin, Chunchi; Hsu, Jianming; Sastry, M. N. V.; Fang, Hulin; Tu, Zhijay; Liu, Ju-Tsung; Ching-Fa, Yao I2-catalyzed Michael addition of indole and pyrrole to nitroolefins // Tetrahedron. 2005. Vol. 61. N. 49. P. 11751 – 11757.

DOI:

http://dx.doi.org/10.1016/j.tet.2005.09.038

4. Cattoen, Xavier; Pericas, Miquel A. Synthesis of highly modular bis(oxazoline) ligands by Suzuki cross-coupling and evaluation as catalytic ligands // Tetrahedron. 2009. Vol. 65. N. 39. P. 8199 – 8205.

DOI:

http://dx.doi.org/10.1016/j.tet.2009.07.053

5. Fleming, Eimear M.; McCabe, Thomas; Connon, Stephen J.; Novel axially chiral bis-arylthiourea-based organocatalysts for asymmetric Friedel–Crafts type reactions // Tetrahedron Letters. 2006. Vol. 47. N. 39. P7037-7042.

DOI:

http://dx.doi.org/10.1016/j.tetlet.2006.07.112

Заранее спасибо!

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