Photoinduced deracemization of [Co(acac)(3)] (acac(-) = acetylacetonate) with chiral Delta-[Ru(men-bpy)(3)](2+) (menbpy=4,4 '-bis{(1R,2S,5R)-(-)-menthoxycarbonyl}-2,2 '-bipyridine)

Authors
Hamada, T Ohtsuka, H Sakaki, S
Citation
T. Hamada et al., Photoinduced deracemization of [Co(acac)(3)] (acac(-) = acetylacetonate) with chiral Delta-[Ru(men-bpy)(3)](2+) (menbpy=4,4 '-bis{(1R,2S,5R)-(-)-menthoxycarbonyl}-2,2 '-bipyridine), CHEM LETT, (4), 2000, pp. 364-365
Citations number
19
Categorie Soggetti
Chemistry
Journal title
CHEMISTRY LETTERS
ISSN journal
03667022 → ACNP
Issue
4
Year of publication
2000
Pages
364 - 365
Database
ISI
SICI code
0366-7022(20000405):4<364:PDO[(=>2.0.ZU;2-6
Abstract
Deracemization of a racemic mixture of Delta- and Lambda-[Co(acac)(3)] (aca c(-) = acetylacetonate) was successfully carried out with a chiral rutheniu m(II) complex, Delta-[Ru(menbpy)(3)](2+) [menbpy = 4,4'-bis{(1R,2S,5R)-(-)- menthoxycarbonyl}-2,2'-bipyridine], in acetnitrile-H2O (7:3 v/v), in the pr esence of either triethylamine or NaOH under visible light irradiation (420 < lambda < 470 nm). The Lambda-isomer was obtained preferentially with the enantiomeric excess of 38%.