+++4 статьи с разных источников

[malik88]

Здравствуйте.
Помогите пожалуйста найти статьи:
1. A Chiral Primary Amine Thiourea Catalyst for the Highly Enantioselective Direct Conjugate Addition of ,-Disubstituted Aldehydes to Nitroalkenes
Mathieu P. Lalonde, Yonggang Chen, Dr., Eric N. Jacobsen, Prof. Dr.
Angewandte Chemie International Edition
Volume 45 Issue 38, Pages 6366 - 6370
DOI:

DOI:

http://dx.doi.org/10.1002/anie.200602221

2. Direct, Highly Enantioselective Pyrrolidine Sulfonamide Catalyzed Michael Addition of Aldehydes to Nitrostyrenes
Wei Wang, Prof. Dr. *, Jian Wang, Hao Li
Angewandte Chemie International Edition
Volume 44 Issue 9, Pages 1369 - 1371
DOI:

DOI:

http://dx.doi.org/10.1002/anie.200461959

3. Asymmetric conjugate addition of carbonyl compounds to nitroalkenes catalyzed by chiral bifunctional thioureas
Xue-jing Zhang, Sheng-ping Liu, Jin-hua Lao, Guang-jian Du, Ming Yan, and Albert S.C. Chan
Tetrahedron: Asymmetry
Volume 20, Issue 12, 2 July 2009, Pages 1451-1458
doi:

DOI:

http://dx.doi.org/10.1016/j.tetasy.2009.06.003

4. Highly enantioselective conjugate addition of aldehydes to nitroolefins catalyzed by chiral bifunctional sulfamides
Xue-jing Zhang, Sheng-ping Liu, Xue-ming Li, Ming Yan and Albert S. C. Chan
Chem. Commun., 2009, 833 - 835,
DOI:

DOI:

http://dx.doi.org/10.1039/b818582d

Заранее благодарен.

[Chem_DM]

1-2

[nikolay_ap]

3, 4

[malik88]

Всем большое спасибо.))