Preparation of tetraketones

Details Preparation of tetraketones Preparation of tetraketones

1975-12-18

1978-04-04

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260297R, C07C 4976

Patent

active

040828069

ABSTRACT:
A method of preparing tetraketone precursors which are useful in the production of high temperature resistant polyquinoxaline resins. Suitable diketones are oxidized with a halogenating agent, such as cupric halide or hydrogen bromide, and dimethylsulfoxide to produce the corresponding tetraketone. The tetraketones which can be produced by the instant process have the formula: ##STR1## wherein R is hydrogen or an aryl, substituted aryl, heterocyclic or substituted heterocyclic radical and R' is an aryl, substituted aryl, arylalkyl, arylether, arylthioether, arylsulfoxide, arylsulfone, heterocyclic or substituted heterocyclic radical.

REFERENCES:
patent: 3839497 (1974-08-01), Wentworth
Fieser et al., Reagents for Organic Synthesis, pp. 161-162, 303-304.

Affiliated with

Also associated with

Rating

Preparation of tetraketones does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of tetraketones, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of tetraketones will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-724057