Process for the preparation of dialkyl succinylsuccinates

Details Process for the preparation of dialkyl succinylsuccinates Process for the preparation of dialkyl succinylsuccinates

1996-09-24

1998-07-21

Higel, Floyd D.

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

Organic compounds

Carboxylic acid esters

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).

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