Journal
ORGANIC LETTERS
Volume 22, Issue 9, Pages 3586-3590Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.0c01052
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Funding
- National Natural Science Foundation of China [21971263]
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An asymmetric rhodium(III)-catalyzed Grignard-type addition of inert arene C-H bond to aldehydes is reported. It provides a new strategy for the synthesis of chiral 3-substituted phthalides in good yields (up to 87%) with high enantiomeric purity (up to 99% ee). Interestingly, a chiral-matching effect between substrate and catalyst was observed, which is crucial to accomplish satisfied reaction outcomes. Mechanistically, the reaction is assumed to proceed via consecutive C(sp(2))-H activation of benzamide, addition to aldehyde, and lactonization.
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