Co(I)-Catalyzed [3 + 2] Annulation of o-Haloaryl Imines with Alkenes for the Synthesis of Indanamines
2018
The use of a CoBr2/1,10-phenanthroline catalytic system together with Zn as the reductant was developed to prepare diversely substituted indanamines by a Co(I)-catalyzed [3 + 2] annulation of o-haloaryl imines with electron-deficient alkenes in good yields. The use of Mn as the reductant allowed the elaboration of a three-component version of this reaction. These conditions were also found to be suitable for the activation of various halides and were extended to the preparation of the indenamine and strigolactam scaffolds.
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