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1. (WO1987003278) SYNTHETIC ROUTES TO CYCLOPENTANECARBOXYLIC ACID DERIVATIVES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1987/003278 International Application No.: PCT/EP1986/000678
Publication Date: 04.06.1987 International Filing Date: 25.11.1986
IPC:
C07C 51/00 (2006.01) ,C07C 51/16 (2006.01) ,C07C 51/347 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
51
Preparation of carboxylic acids or their salts, halides, or anhydrides
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
51
Preparation of carboxylic acids or their salts, halides, or anhydrides
16
by oxidation
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
51
Preparation of carboxylic acids or their salts, halides, or anhydrides
347
by reactions not involving formation of carboxyl groups
Applicants:
SCHERING AKTIENGESELLSCHAFT BERLIN UND BERGKAMEN [DE/DE]; Müllerstr. 170-178 D-1000 Berlin 65, DE
Inventors:
NUMMY, Laurence, John; US
CORKINS, H., Glenn; US
SCARANO, Louis, S.; US
BYRNE, Dennis, P.; US
Priority Data:
802,48127.11.1985US
Title (EN) SYNTHETIC ROUTES TO CYCLOPENTANECARBOXYLIC ACID DERIVATIVES
(FR) PROCEDES DE SYNTHESE POUR OBTENIR DES DERIVES D'ACIDE CYCLOPENTANECARBOXYLIQUE
Abstract:
(EN) A ring contraction approach is applied to preparation of cyclopentane derivatives, especially 2,2,5,5-tetra-methylcyclopentanecarboxylic acid from cyclohexane compounds. In one aspect, a cyclohexane diazoketone is reacted with an amine (e.g., an alanine ester) to form the corresponding cyclopentane acid amide.
(FR) Une méthode de contraction de cycles est appliquée à la préparation de dérivés de cyclopentane, notamment d'acide 2,2,5,5-tétraméthylcyclopentanecarboxylique à partir de composés de cyclohexane. Dans un aspect, une diazocétone de cyclohexane est mise en réaction avec une amine (par exemple un ester d'alanine) pour former l'amide correspondant d'acide de cyclopentane.
Designated States: DK, JP
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0247199DK390787