Preparation of cyclic N,N'-dimethylureas

Details Preparation of cyclic N,N'-dimethylureas Preparation of cyclic N,N'-dimethylureas

1989-08-23

1990-11-13

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544315, C07D23330, C07D23902

Patent

active

049703218

ABSTRACT:
Cyclic N,N'-dimethylureas I ##STR1## where A is a 1,2- or 1,3-alkylene group of 2 to 10 carbon atoms, are prepared by reacting the corresponding non-methylated cyclic urea with formaldehyde and excess formic acid and then removing the formic acid still present in the reaction mixture, by a process in which the formic acid is subjected to a thermal decomposition reaction by means of a catalyst system consisting of a tertiary amine and a copper salt.

REFERENCES:
Journal of Chemical and Engineering Data, vol. 21, No. 2, 1976, pp. 150-153, J. Rosenfarb et al., "Dielectric Constants, Viscosities, and Related Physical Properties of Several Substituted Liquid Ureas at Various Temperatures".
Journal of Organometallic Chemistry, vol. 117, 1976, pp. 149-155, Hideki Sakurai et al., "Chemistry of Organosilicon Compounds", (with English translation).
Angew. Chem., vol. 82, 1970, pp. 73-77, (no English translation).

Affiliated with

Also associated with

Rating

Preparation of cyclic N,N'-dimethylureas 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 cyclic N,N'-dimethylureas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of cyclic N,N'-dimethylureas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-777894