X-ray diffraction analysis of chiral (R,S)-(ON)Ru-salen complex: Unusual unsymmetric conformation

Synlett

Volumn , Issue 7, 1999, Pages 1166-1168

  Takeda, Tsuyoshi ^a   Irie, Ryo ^a   Katsuki, Tsutomu ^a  

^a KYUSHU UNIVERSITY   (Japan)

Author keywords

(ON+)(salen)ruthenium(II) complex; Asymmetric epoxidation; Lewis acid catalysis; Unsymmetrical conformation; X ray structure

Indexed keywords

RUTHENIUM COMPLEX;

ARTICLE; CATALYSIS; CHEMICAL STRUCTURE; CHIRALITY; CONFORMATION; EPOXIDATION; X RAY CRYSTALLOGRAPHY; X RAY DIFFRACTION;

EID: 0032813694     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-1999-2783     Document Type: Article

References (15)

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2. b) Ito, Y.N.; Katsuki, T. Bull. Chem. Soc. Jpn. 1999 (4), 72, 603-619.
3. Yamashita Y.; Katsuki, T. Synlett. 1995, 829-830.
4. a) Fukuda, T.; Katsuki, T. Tetrahedron 1997, 53 7201-7208.
5. b) Fukuda, T.; Irie, R.; Katsuki, T. Tetrahedron 1999, 55, 649-664.
6. For details of these asymmetric reactions with (ON)Ru-salen complex 1 as a catalyst, see the preceding three communications.
7. Odenkirk, W.; Rheingold, A. L.; Bosnien, B. J. Am. Chem. Soc. 1992, 114, 6392-6398.
8. 1 = 0.055, Rw = 0.046 for 6266 reflections and 640 variables, GOF = 1.44. Data were collected on a Rigaku RAXIS RAPID imaging plate area detector with graphite monochromated Mo-Kα at -90 °C. Structural analysis was performed using the teXsan crystallographic software package. The structure was solved by heavy atom Patterson methods and expanded using Fourier techniques. All non-hydrogen atoms were refined anisotropically. Hydrogen atoms were included but not refined.
9. a) Carrondo, M. A. A. F. de C. T.; Rudolf, P. R.; Skapski, A. C.; Thornback, J. R.; Wilkinson, G. Inorg. Chim. Acta 1977, 24, L95-L96.
10. b) Leung, W.-H.; Chan, E. Y. Y.; Chow, E. K. F.; Williams, I. D.; Peng, S.-M. J. Chem. Soc., Dalton Trans. 1996, 1229-1236.
11. The dihedral angle between the planes [N(1)-C(7)-C(C8)-C(17)-O(1) and N(2)-C(34)-C(35)-C(44)-O(2)] is ca. 16°.
12. a) Irie, R.; Hashihayata, T.; Katsuki, T.; Akita, M.; Moro-oka, Y. Chem. Lett. 1998, 1041-1042.
13. b) Punniyamurthy, T.; Irie, R.; Katsuki, T.; Akita, M.; Moro-oka, Y., in the preceding communication.
14. a) See the note 8 in the preceding communication.
15. b) Lorkovic, I.M.; Miranda, K.M.; Lee, B.; Bernhard, S.; Schoonover, J.R.; Ford, P.C. J. Am. Chem. Soc. 1998, 120, 11674-11683.