Process for preparing 4-substituted...

Details Process for preparing 4-substituted... Process for preparing 4-substituted...

C - Chemistry, Metallurgy

07

D

C07D 211/94 (2006.01)

Patent

CA 2506407

The present invention relates to processes for preparing 4-substituted 2,2,6,6-tetramethylpiperidin-N-oxy compounds [II] or mixtures of [II] and 4- substituted 2,2,6,6-tetramethylpiperidin-N-hydroxy compounds [III] Image where X+Y can be O or can represent a cyclic ketal with the radicals Image or can represent an open-chain ketal in which X= O-R and Y= O-R', where R and R' can be identical or different and can each be CH3, CH2-CH3, CH2-CH2-CH3, CH(CH3)-CH3, CH2-CH2-CH2-CH3 and CH2-CH(CH3)-CH3, by oxidizing corresponding 4-substituted 2,2,6,6-tetramethylpiperidines [I] Image by means of hydrogen peroxide in the presence of alkali metal hydrogencarbonate and/or ammonium hydrogencarbonate and in the presence or absence of a solvent, in which the reaction is carried out with the addition of Brönsted acids which have an acid strength greater than that of the hydrogencarbonate used.

Affiliated with

Also associated with

Rating

Process for preparing 4-substituted... 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 4-substituted..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing 4-substituted... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1369983