Pummerer-type rearrangement on aromatic rings: an unprecedented ipso-substitution of the sulfinyl group of p-sulfinylphenyl ethers into oxygen functional groups leading to protected dihydroquinone derivatives
S. Akai, Kiyosei Iio, Y. Takeda, H. Ueno, Kayoko Yokogawa, Y. Kita
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引用次数: 4
Abstract
The treatment of p-(phenylsulfinyl)phenyl ethers 1 with trifluoroacetic anhydride in the presence of styrene selectively caused the direct ipso-substitution of the sulfinyl groups by trifluoroacetoxy groups, giving the protected dihydroquinone derivatives 3 in high to quantitative yields.
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