Journal
ACS CATALYSIS
Volume 11, Issue 21, Pages 13355-13362Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.1c04143
Keywords
allene; reductive cross-coupling; annulation; dicarbofunctionalization; nickel
Categories
Funding
- 1000-Youth Talents Plan
- National Natural Science Foundation of China [21772183, 22071230]
- Fundamental Research Funds for the Central Universities [WK2060190086]
- University of Science and Technology of China
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In this study, a cross-electrophile strategy was successfully applied to synthesize multisubstituted allenes. Nickel-catalyzed reductive cross-coupling between propargyl carbonates and organoiodides provided a method to prepare tri- or tetrasubstituted allenes without the need for pregenerated organometallics. Furthermore, propargyl carbonates were found to be suitable allenylating agents in nickel-catalyzed asymmetric reductive aryl-allenylation, leading to the formation of chiral benzene-fused cyclic compounds with a quaternary allenyl-substituted stereogenic center in a highly enantioselective manner.
In this context, we report the successful application of a cross-electrophile strategy in the synthesis of multisubstituted allenes. Under the catalysis of nickel, reductive cross-coupling between propargyl carbonates and organoiodides provides an entry to prepare tri- or tetrasubstituted allenes without employing any pregenerated organometallics. Furthermore, propargyl carbonates also prove to be suitable allenylating agents in nickel-catalyzed asymmetric reductive aryl-allenylation of aryl-iodide-tethered unactivated alkenes, furnishing a variety of chiral benzene-fused cyclic compounds bearing a quaternary allenyl-substituted stereogenic center in a highly enantioselective manner.
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