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1. WO2019212338 - DIELS- ALDER RING-OPENING PROCESS

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Publication Number WO/2019/212338
Publication Date 07.11.2019
International Application No. PCT/NL2019/050250
International Filing Date 30.04.2019
IPC
C07C 51/087 2006.1
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides, or anhydrides
083from carboxylic acid anhydrides
087by hydrolysis
C07C 63/15 2006.1
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
63Compounds having carboxyl groups bound to carbon atoms of six-membered aromatic rings
14Monocyclic dicarboxylic acids
15all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
CPC
C07C 253/30
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
253Preparation of carboxylic acid nitriles
30by reactions not involving the formation of cyano groups
C07C 51/087
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
51Preparation of carboxylic acids or their salts, halides or anhydrides
083from carboxylic acid anhydrides
087by hydrolysis
C07C 67/30
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
67Preparation of carboxylic acid esters
30by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
C07D 209/48
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
209Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
02condensed with one carbocyclic ring
44Iso-indoles; Hydrogenated iso-indoles
48with oxygen atoms in positions 1 and 3, e.g. phthalimide
C07D 307/88
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
307Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
77ortho- or peri-condensed with carbocyclic rings or ring systems
87Benzo [c] furans; Hydrogenated benzo [c] furans
88with one oxygen atom directly attached in position 1 or 3
C07D 307/89
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
307Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
77ortho- or peri-condensed with carbocyclic rings or ring systems
87Benzo [c] furans; Hydrogenated benzo [c] furans
89with two oxygen atoms directly attached in positions 1 and 3
Applicants
  • NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO [NL]/[NL]
Inventors
  • CROCKATT, Marc
  • URBANUS, Johan
Agents
  • WITMANS, H.A.
Priority Data
18170098.030.04.2018EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) DIELS- ALDER RING-OPENING PROCESS
(FR) PROCÉDÉ D'OUVERTURE DE CYCLE DE DIELS-ALDER
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Abstract
(EN) The invention is directed to a process for the ring-opening of a cycloadduct of formula I obtainable from a reaction of a furanic compound and a diene, said process comprising contacting the cycloadduct with an acidic mixture comprising sulfuric acid and an activating agent to obtain a ring-opened product. The present invention is particularly directed a continuous process.
(FR) L'invention concerne un procédé d'ouverture de cycle d'un produit de cycloaddition de formule I pouvant être obtenu à partir d'une réaction d'un composé furanique et d'un diène, ledit procédé comprenant la mise en contact du produit de cycloaddition avec un mélange acide comprenant de l'acide sulfurique et un agent d'activation pour obtenir un produit à cycle ouvert. La présente invention concerne en particulier un procédé continu.
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