Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfur containing
Reexamination Certificate
2004-11-22
2008-03-04
Zucker, Paul A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfur containing
Reexamination Certificate
active
07339082
ABSTRACT:
The present invention provides a method for producing various types of arylbis(perfluoroalkylsulfonyl)methane having a bulky aryl group and an electron-accepting aryl group in which synthesis was conventionally considered to be difficult, at high efficiency; a novel arylbis(perfluoroalkylsulfonyl)methane that can be widely applied to asymmetric catalyst, various types of functional materials and the like; and a metallic salt thereof. In addition, excellent catalysts are also provided. An aryl halomethane is reacted with a sodium trifluoromethane sulfinate, the arylmethyl triflone produced thereby is reacted with a t-BuLi and the like, the lithium salt of the arylmethyl triflone obtained is reacted with a trifluoromethane sulfinic acid anhydride, and an arylbis (trifluoromethylsulfony)methane such as pentafluorophenylbis(triflyl)methane, {4-(pentafluorophenyl)-2,3,5,6-tetrafluorophenyl}bis(triflyl)methane and the like are obtained at a high yield.
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English translation of the International Preliminary Examination Report (Form PCT/IB/409), and Notification of Transmittal (Form PCT/IB/338); mailed Oct. 2, 2003, from the International Bureau.
Ishihara Kazuaki
Yamamoto Hisashi
Japan Science and Technology Corporation
Morgan & Finnegan , LLP
Zucker Paul A.
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