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Cover Picture Organocatalytic Asymmetric Inverse-Electron-Demand Aza-DielsЦAlder Reaction of N-Sulfonyl-1-aza-1 3-butadienes and Aldehydes (Angew. Chem. Int. Ed

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D 3461
International Edition
Sugar Biosynthesis
H.-w. Liu et al.
H. Hopf
Atmospheric Chemistry
J. Lelieveld
ACIEFS 47 (51) 9783–9998 (2008) · ISSN 1433–7851 · Vol. 47 · No. 51
Cover Picture
Bo Han, Jun-Long Li, Chao Ma, Shan-Jun Zhang, and YingChun Chen*
The inverse-electron-demand aza Diels–Alder reaction of N-sulfonyl-1-aza-1,3butadienes and aldehydes shown in the cover picture is explored through catalysis by
an a,a-diphenylprolinol OTMS ether salt. In their Communication on page 9971 ff.,
Y.-C. Chen and co-workers show how this simple process affords highly
enantioenriched hemiaminal intermediates, which are readily converted into a
diversity of chiral piperidine derivatives.
H. Hopf describes applications of [2.2]paracyclophanes as monomers in his
Minireview on page 9808 ff. Their layered structure can be retained or destroyed in
novel polymers, and they can be used to prepare unsaturated molecular scaffolds.
Sugar Biosynthesis
Many natural products derive their biologically activity from sugar substituents;
modification of the sugar structure can alter the properties of the parent compound.
In their Review on page 9814 ff., H.-w. Liu et al. describe current research in
Radical Reactivity
The use Fourier transform ion cyclotron resonance mass spectrometery to
investigate the reactivity of the s,s,s-triradical 3,4,5-tridehydropyridinium cation is
described by J. J.Nash, H. I. Kenttmaa, and co-workers in their Communication on
page 9860 ff.
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asymmetric, reaction, electro, sulfonyl, butadiene, aldehyde, int, cover, angel, dielsцalder, chem, organocatalytic, picture, aza, inverse, demand
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