Abstract
We develop a Ni-catalyzed asymmetric reductive spirocyclization of 1,6-enynes with o-haloaryl aldehydes. This approach provides an efficient method for the construction of chiral spiroindanone pyrrolidine derivatives in good yields with excellent enantio- and diastereoselectivity (up to 99% ee, > 20/1 dr). This reaction does not require pre-prepared organometallic reagents and exhibits excellent substrate compatibility.
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