Abstract
AbstractThe enantioselective reductive coupling of oxabenzonorbornadiene with vinyl bromide is developed with earth‐abundant nickel catalyst with copper as Lewis acid co‐catalyst. The asymmetric reductive coupling is applicable with a wide range of azabenzonorbornadienes and vinyl bromides under nickel/copper co‐catalytic system, affording the cis ring‐opening vinylation products in good yields with high optical purities. The present study has enabled straightforward stereoselective preparation of chiral 2‐vinyl‐tetrahydronaphthalens from vinyl halides.
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