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.
Formula (I): (R
1
)(R
2
)(R
3
)PH.BAr
4
(I)
wherein R
1
, R
2
, R
3
and Ar are as defined in the specification. The process (A) includes reacting a phosphine with a) HCl or b) H
2
SO
4
to 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 R
1
and 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.
本发明涉及一种
磷酸盐
硼化合物,其由式(I)表示(以下简称化合物(I))。本发明的目的是提供(A)一种新的工艺,通过简单的反应操作和高产率安全地在工业规模下生产化合物;(B)一种易于处理的新化合物;以及(C)新的用途作为催化剂。式(I):(R1)(R2)(R3)PH.BAr4(I),其中R1,R2,R3和Ar如规范中所定义。工艺(A)包括将
磷化物与a)HCl或b)H2SO4反应,以产生a)盐酸盐或b)
硫酸盐;然后将盐与四芳基
硼酸盐化合物反应。化合物(B)例如具有二级或三级烷基作为R1,在空气中易于处理而不需要特殊注意。用途(C)的特点是,化合物(I)代替过渡
金属复合催化剂的不稳定
磷化物化合物,用于催化C-C键,C-N键和C-O键形成反应,并且该化合物产生与过渡
金属复合催化剂相同的效果。