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200517.fm Page 170 Friday, March 18, 2005 2:52 PM
2005
Fused pyridine derivatives
R 0450
Stereoselective Intra- and Intermolecular [2 + 2] Photocycloaddition Reactions of
— The title reactions of quinolones (I), (IV), and (VI)
17- 153 4-(2'-Aminoethyl)quinolones.
proceed with very good chemo- and regioselectivity. In all cases but one, excellent
diastereoselectivity is observed. Employing the chiral complexing reagent AUX, the
reaction of quinolone (VIb) is performed with excellent enantiomeric excess. —
(BRANDES, S.; SELIG, P.; BACH*, T.; Synlett 2004, 14, 2588-2590; Lehrstuhl Org.
Chem., TU Muenchen, D-85747 Garching, Germany; Eng.) — Klein
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