Process for the preparation of dialkyl succinylsuccinates

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

546 58, 560126, C07C22900, C07C 6974, C07D22118

Patent

active

057837236

ABSTRACT:
Dialkyl succinylsuccinates are prepared in a pure form and in high yield by reacting an alkali metal alcoholate with an excess of dialkyl succinate under anhydrous conditions followed by isolation of the di(alkali metal) salt of the dialkyl succinylsuccinate and then neutralization of the salt with acid. The resulting dialkyl succinylsuccinate is isolated or used without isolation as an intermediate in the production of quinacridone pigments. The disclosed process provides for high yields and reduced organic waste compared with known processes.

REFERENCES:
patent: 3124581 (1964-03-01), Bohler et al.
patent: 4435589 (1984-03-01), Rolf et al.
patent: 5208365 (1993-05-01), Fuchs et al.
patent: 5347038 (1994-09-01), Arndt et al.
patent: 5367096 (1994-11-01), Ritter et al.
Mielsen et al. Organic Synthesis, 45, 25-31 (1973).
Mussee et al. Ber, 97, 1147 (1964).
Georha, et al, Jour. Indian Chem. Soc. vol. 41, No. 8 (1964).
Organic Reactions I, 283-289 (1942).
Piutti, Gay, Chim. Ital., 20, 165-178 (1890) Partial translation of p. 167.
H. Ebert, Ann, vol. 229, 52 (1885).
JeaneNaud, Ber., 22, 1982 (1889).
Liebermann, Ann, 404, 272-321 (1914).
Vincent et al. J. Org. Chem., 3, 603 (1938).
Derwent Abstracts, 87-027586, (Dec. 16, 1986-JP 61 286 343).

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

Process for the preparation of dialkyl succinylsuccinates 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 the preparation of dialkyl succinylsuccinates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of dialkyl succinylsuccinates will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1648167

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