Pierre Cottet

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Alkenyl and alkyl groups have been successfully introduced to six-membered α,β-unsaturated lactams via a copper-catalyzed asymmetric 1,4-addition of the corresponding alanes. Moderate to good yields and good to excellent enantioselectivities are achieved by using a combination of the very cheap copper(II) naphthenate and a readily available phosphine amine(More)
In the epidermic cells ofAllium cepa stained with a benzopyrene-glycerol-serum medium the fluorescence microscope shows a blue cytoplasmic fluorescence. The cells which have absorbed benzopyrene plasmolize and deplasmolize in the same time as the control cells. No photodynamic effect could be observed when stained cells were irradiated with ultra-violet(More)
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