Process for preparing 6-oxo-(6H)-dibenz-[c,e][1,2]-oxaphosphorin

Details Process for preparing 6-oxo-(6H)-dibenz-[c,e][1,2]-oxaphosphorin Process for preparing 6-oxo-(6H)-dibenz-[c,e][1,2]-oxaphosphorin

1995-09-12

1997-07-22

Richter, Johann

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

Organic compounds

Phosphorus esters

C07F 902

Patent

active

056505302

ABSTRACT:
Optionally substituted ODOP is obtained by reaction of optionally substituted o-phenylphenol with PCl.sub.3 in the presence of Lewis acids at elevated temperature in a first stage, with according to the invention an excess of at least 0.05 mol of PCl.sub.3 per mol of o-phenylphenol being maintained during the entire reaction time, and, after removal of the PCl.sub.3, by hydrolysis in a second stage using 1-2 mol of H.sub.2 O per chlorine equivalent of the product of the first stage at 50.degree.-150.degree. C. and with removal of HCl and residual H.sub.2 O.

REFERENCES:
patent: 3702878 (1972-11-01), Saito et al.
patent: 4618693 (1986-10-01), Saito et al.
patent: 5008426 (1991-04-01), Kleiner et al.
patent: 5391798 (1995-02-01), Kleiner
patent: 5481017 (1996-01-01), Kleiner
S.D. Pastor, et al., Phosphorous and Sulfur, vol. 31, pp. 71-76, (1987).
Chemical Abstracts, vol. 76, abstract No. 99823z, p. 471, abstract of DE 2,034,887, (1972).
Chemical Abstracts, vol. 121, abstract No. 256037p, abstract of JP 06,145,182, p. 1198, (1994).

Affiliated with

Also associated with

Rating

Process for preparing 6-oxo-(6H)-dibenz-[c,e][1,2]-oxaphosphorin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing 6-oxo-(6H)-dibenz-[c,e][1,2]-oxaphosphorin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing 6-oxo-(6H)-dibenz-[c,e][1,2]-oxaphosphorin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1560828