Synthesis of trifluoromethyl ethers and difluoro(methylthio)methyl ethers by the reaction of dithiocarbonates with IF5-pyridine-HF
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Add time:08/05/2019 Source:sciencedirect.com
Trifluoromethyl ether and difluoro(methylthio)methyl ether of phenols and aliphatic alcohols were selectively synthesized from the corresponding dithiocarbonates. When IF5-pyridine-HF was used alone in the reaction of the dithiocarbonate, the difluoro(methylthio)methyl ether was selectively formed. On the other hand, by the additional use of Et3N-6HF with IF5-pyridine-HF, trifluoromethyl ether was formed selectively. Various functional groups such as ester, ether, amide, and acetonide could tolerate the reaction conditions, and various functionalized difluoro(methylthio)methyl ethers and trifluoromethyl ethers were synthesized.
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