Oxaphosphorins and a process for their preparation

Details Oxaphosphorins and a process for their preparation Oxaphosphorins and a process for their preparation

1996-06-07

1998-04-14

Shah, Mukund J.

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

Organic compounds

Phosphorus esters

549200, C07F 96574

Patent

active

057393729

ABSTRACT:
The present invention relates to oxaphosphorins of the formula ##STR1## where Ar-Ar is 1-phenylnaphthyl or 1,1'-binaphthyl, R.sup.1 and R.sup.2 are identical or different and are F, Cl, alkyl or alkoxy each having from I to 8 carbon atoms or substituted or unsubstituted aryl, a and b are identical or different and are each an integer from 0 to 4, or Ar-Ar is biphenyl, R.sup.1 and R.sup.2 are identical or different and are substituted or unsubstituted aryl, a and b are as defined above, but a+b.gtoreq.1, X is Cl or Br and the Ar-P and Ar-O bonds are each arranged in the ortho position to the Ar-Ar bond.
The invention further relates to a process for preparing these oxaphosphorins.

REFERENCES:
patent: 3702278 (1972-11-01), Saito et al.
patent: 5391798 (1995-02-01), Kleiner

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