Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 143, Issue 29, Pages 11141-11151Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.1c04667
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Funding
- NSFC [21921002]
- MOST [2018ZX09711001-005-004]
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The unique small silacycle 3-silaazetidine can be easily prepared in situ from diverse air-stable precursors and shows excellent functional group tolerance in a palladium-catalyzed ring expansion reaction, giving diverse silaazacycle derivatives. These derivatives are promising ring frameworks for the discovery of Si-containing functional molecules.
Small-ring silacycles are important organosilane species in main-group chemistry and have found numerous applications in organic synthesis. 3-Silaazetidine, a unique small silacycle bearing silicon and nitrogen atoms, has not been adequately explored due to the lack of a general synthetic scheme and its sensitivity to air. Here, we describe that 3-silaazetidine can be easily prepared in situ from diverse air-stable precursors ((RSO2NHCH2SiR2CH2Cl)-C-1). 3-Silaazetidine shows excellent functional group tolerance in a palladium-catalyzed ring expansion reaction with terminal alkynes, giving 3-silatetrahydropyridines and diverse silaazacycle derivatives, which are promising ring frameworks for the discovery of Si-containing functional molecules.
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