Journal
ORGANIC LETTERS
Volume 24, Issue 31, Pages 5698-5703Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.2c02074
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Funding
- National Natural Science Foundation of China [22073043, 22103037, 21903043, 21833002]
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A metal-free silyl-pyridylation method for the synthesis of C-4-silylalkylated pyridines has been demonstrated. This method proceeds through a silyl radical addition/radical-radical coupling sequence and exhibits a broad substrate scope and excellent functional group compatibility, making it suitable for late-stage modification of bioactive molecules.
A metal-free silyl-pyridylation of alkenes using silyl boronates and B(2)pin(2) through a pyridine-mediated B-interelement activation has been demonstrated, which provides a practical strategy for a variety of C-4-silylalkylated pyridines. DFT calculations and control experiments show that the reaction proceeds through a silyl radical addition/radical-radical coupling sequence. This protocol features a broad substrate scope and excellent functional group compatibility, and thus it showcases great potential in the late-stage modification of bioactive molecules.
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