Production of keto acids

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07C22952

Patent

active

059257873

ABSTRACT:
A method for the production of a keto acid having the general formula ##STR1## wherein R1 and R2 independently represent a straight or branched chain alkyl of 1-18 carbon atoms, a cycloalkyl of 4-8 carbon atoms or a phenyl, each of which may be substituted by at least one substituent selected from the group consisting of halogen atoms and alkyls having 1-4 carbon atoms, an aralkyl of 7-10 carbon atoms, alkoxyalkyl having 2-20 carbon atoms, tetrahydrofuryl alkyl, alkylcarboxy alkyl, alkylcarboxy benzyl, or R1 and R2 together with the adjacent nitrogen atom may form a heterocyclic ring, or one of R.sub.1 and R.sub.2 is hydrogen, but R1 and R2 may not simultaneously be methyl or ethyl or benzyl which comprises reacting a m-amino phenol having the general formula ##STR2## wherein R1 and R2 are the same as above, with phthalic anhydride, in an organic solvent in an amount of less than 0.5 parts by weight per part of m-amino phenol.

REFERENCES:
patent: 5371285 (1994-12-01), Kondo et al.
Derwent Abstract 75-00537W.
Derwent Abstract 91-181444.
Derwent Abstract 91-122582.
Derwent Abstract 91-112648.
Derwent Abstract 91-358425.
Derwent Abstract 84-130440.
Derwent Abstract 86-221316.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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

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

Rate now

     

Profile ID: LFUS-PAI-O-1323172

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.