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  • Title: Nickel-catalyzed Negishi cross-couplings of 6-chloropurines with organozinc halides at room temperature.
    Author: Wang DC, Niu HY, Qu GR, Liang L, Wei XJ, Zhang Y, Guo HM.
    Journal: Org Biomol Chem; 2011 Oct 26; 9(22):7663-6. PubMed ID: 21935566.
    Abstract:
    An efficient method for the synthesis of 6-alkyl or 6-aryl purines (nucleosides) was developed via nickel-catalyzed Negishi cross-couplings of 6-chloropurines and organozinc halides. The ligand-free process gave good to excellent isolated yields at room temperature.
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