Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus containing
Reexamination Certificate
2004-11-26
2010-06-01
Witherspoon, Sikarl A (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus containing
C423S299000, C423S276000
Reexamination Certificate
active
07728176
ABSTRACT:
The invention relates to a phosphonium borate compound represented by Formula (I) (hereinafter, the compound (I)). The invention has objects of providing (A) a novel process whereby the compound is produced safely on an industrial scale, by simple reaction operations and in a high yield; (B) a novel compound that is easily handled; and (C) novel use as catalyst.in-line-formulae description="In-line Formulae" end="lead"?Formula (I): (R1)(R2)(R3)PH.BAr4 (I)in-line-formulae description="In-line Formulae" end="tail"?wherein R1, R2, R3and Ar are as defined in the specification. The process (A) includes reacting a phosphine with a) HCl or b) H2SO4to produce a) a hydrochloride or b) a sulfate; and reacting the salt with a tetraarylborate compound. The compound (B) has for example a secondary or tertiary alkyl group as R1and is easily handled in air without special attention. The use (C) is characterized in that the compound (I) is used instead of an unstable phosphine compound of a transition metal complex catalyst for catalyzing C—C bond, C—N bond and C—O bond forming reactions and the compound produces an effect that is equal to that achieved by the transition metal complex catalyst.
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Iwazaki Hideyuki
Masaoka Shin
Hokko Chemical Industry Co. Ltd.
Nwaonicha Chukwuma O
The Webb Law Firm P.C.
Witherspoon Sikarl A
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