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  • Title: Cobalt-catalyzed asymmetric olefin aziridination with diphenylphosphoryl azide.
    Author: Jones JE, Ruppel JV, Gao GY, Moore TM, Zhang XP.
    Journal: J Org Chem; 2008 Sep 19; 73(18):7260-5. PubMed ID: 18710285.
    Abstract:
    The cobalt(II) complexes of D2-symmetric chiral porphyrins, such as 3,5-Di(t)Bu-ChenPhyrin P5, can catalyze asymmetric olefin aziridination with diphenylphosphoryl azide (DPPA) as a nitrene source. Acceptable asymmetric inductions were observed for the [Co(P5)]-based catalytic system, forming the desired N-phosphorus-substituted aziridines in moderate to high yields and good enantioselectivities.
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