Journal
ORGANIC LETTERS
Volume 22, Issue 23, Pages 9292-9297Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.0c03529
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Funding
- JSPS KAKENHI [JP19K05451, JP18H02104, JP18H04386]
- Naito Foundation
- Japan Agency for Medical Research and Development (AMED) [JP20am0101098]
- Cooperative Research Project of the Research Center for Biomedical Engineering
- Research Program of Five-Star Alliance in Network Joint Research Center for Materials and Devices
- MEXT Project for Promoting Public Utilization of Advanced Research Infrastructure (Program for Supporting Introduction of the New Sharing System) [JPMXS0422300120]
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A facile method to prepare difluoromethylenes, including alpha,alpha-difluorobenzyl chlorides, by single C-F transformations of benzotrifluorides is disclosed. The C-F cleavage followed by chlorination proceeded smoothly using trityl chloride through the generation of trityl cation as an activator and chloride anion as a nucleophile. Diverse difluoromethylenes such as difluorobenzyl ethers were efficiently prepared by virtue of the good versatility of the resulting chloro and fluorosilyl groups.
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