Enantioselective and Regiodivergent Addition of Purines to Terminal Allenes: Synthesis of Abacavir
作者:Niels Thieme、Bernhard Breit
DOI:10.1002/anie.201610876
日期:2017.2
The rhodium‐catalyzed atom‐economic asymmetric N‐selective intermolecular addition of purine derivatives to terminalallenes is reported. Branched allylic purines were obtained in high yields, regioselectivity and outstanding enantioselectivity utilizing a Rh/Josiphos catalyst. Conversely, linear selective allylation of purines could be realized in good to excellent regio‐ and E/Z‐selectivity with