Journal
ORGANIC CHEMISTRY FRONTIERS
Volume 8, Issue 12, Pages 3118-3122Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1qo00201e
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Funding
- National Natural Science Foundation of China [21971173]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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This study presents a novel radical-mediated [3 + 2]-cycloaddition reaction of alkenes under photochemical conditions, with a set of rationally designed bromodifluoromethyl alkynyl ketones prepared and applied in the cascade reaction, featuring broad functional group tolerance and excellent regio- and stereo-selectivity. The transformation is suitable for both activated and unactivated alkenes, leading to a variety of valuable alpha,alpha-difluorocyclopentanones bearing a tetra-substituted E-alkene.
Herein we disclose a novel radical-mediated [3 + 2]-cycloaddition reaction of alkenes under photochemical conditions. A set of rationally designed bromodifluoromethyl alkynyl ketones were prepared and applied in the cascade reaction. The protocol features broad functional group tolerance and excellent regio- and stereo-selectivity. Both activated and unactivated alkenes were suitable substrates. The transformation gives rise to a variety of valuable alpha,alpha-difluorocyclopentanones bearing a tetra-substituted E-alkene.
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