Journal
CHEMISTRYSELECT
Volume 6, Issue 48, Pages 13964-13968Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202103878
Keywords
carbonylation; ring expansion; thietane; cobalt; gamma-thiolactones
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Funding
- NSFC
- multifunctional platform for innovation of ECNU
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The study introduces a method for cobalt-catalyzed carbonylative ring expansion of thietane under ambient CO pressure, showcasing the dual roles of Co-2(CO)(8) as a precursor for both carbonylation catalyst and Lewis acid. Additionally, the carbonylative ring expansion was successfully demonstrated under CO gas-free conditions using Co-2(CO)(8) as both a CO surrogate and pre-catalyst.
Cobalt-catalyzed carbonylative ring expansion of thietane under ambient CO pressure was developed, affording a variety of thioacetones in moderate to high yields. dual roles of Co-2(CO)(8) as the precursor of both carbonylation catalyst and Lewis acid was revealed by control experiments and spectroscopic characterization. The carbonylative ring expansion under CO gas-free conditions was demonstrated by using Co-2(CO)(8) as both CO surrogate and pre-catalyst.
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