Phosphepinium salts

Details Phosphepinium salts Phosphepinium salts

1995-06-07

1998-04-21

Wilson, Donald R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus containing

368 12, C07F 902

Patent

active

057419310

ABSTRACT:
Phosphepinium Salts Thereof
The present invention relates to phosphonium salts of the formula (I) ##STR1## in which Ar--Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, each CH.sub.2 group is arranged in the ortho position to the Ar--Ar bond, R is F, an alkyl radical or an alkoxy radical respectively having 1 to 8 carbon atoms, n is an integer from 0 to 4, R.sup.1 and R.sup.2 are identical or different and, independently of each other, are an alkyl radical having 1 to 10 carbon atoms, a cycloaliphatic radical having 5 to 10 carbon atoms, or are a radical Ar.sup.1 --(R.sup.3).sub.m, where Ar.sup.1 is a phenyl or naphthyl radical, R.sup.3 is F, Cl, CF.sub.3, SO.sub.3 H, SO.sub.3 Me (Me.dbd.Li, Na or K), a dialkylamino radical having 2 to 8 carbon atoms, an alkyl radical or an alkoxy radical respectively having 1 to 8 carbon atoms and m is an integer from 0 to 5, or R.sup.1 and R.sup.2 together with the P atom form a ring having 4 to 8 members to which may be fused one or two aromatic rings or ring systems including 6 to 10 carbon atoms and X.sup.- is a monovalent anion or the equivalent of a polyvalent anion of a mineral acid, carboxylic acid, sulfonic acid or an alcohol. The invention further relates to a process for the preparation of the phosphonium salts and use thereof.

REFERENCES:
patent: 2905717 (1959-09-01), Sarnecki et al.
patent: 4943380 (1990-07-01), Sugiura et al.
S. Gladiali et al., "Tetrahedron: Asymmetry", vol. 5 (4), 511-514 (1994).
K. Yamamoto et al., Japanese Patent 9067 (1955), Chem. Abstracts, 51:17992f (1957).

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