http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6525226-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_114e4423ec77cbc8dab9d0a98909704e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2521-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2523-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2603-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2527-236 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2-864 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2-861 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-46 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C2-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-46 |
| filingDate | 2002-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2003-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba57bc7df074b69dd9abc439b94b6b50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ed87d7b1b49865d6d602155eb5e5fff4 |
| publicationDate | 2003-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6525226-B2 |
| titleOfInvention | Process for preparation of substituted aromatic compound employing friedel-crafts reaction using a reusable basic anionic clay catalyst |
| abstract | A process for Friedel-Crafts type liquid-phase alkylation or acylation of an aromatic compound using a hydrotalcite-type basic anionic clay catalyst represented by a formula:whereM2+ is a divalent cation selected from Mg2+, Zn2+, Ni2+, Co2+, Mn2+, Cu2+ or a mixture thereof,M3+ is a trivalent cation selected from Ga3+, In3+ Al3+, Fe3+ Cr3+ or a mixture thereof; x is a mole fraction of trivalent cations in the range of about 0.05 to about 0.5; O is oxygen; H is hydrogen; Ay- is an anion; y minus is an anionic negative charge having a value of 1 minus or 2 minus; and q is a number of water molecules, as the water of hydration; and involving following steps:i. pretreating said catalyst by contacting it with a halogen containing compound in the presence or absence of a non-aqueous solvent and optionally washing the pretreated catalyst with non-aqueous solvent or liquid aromatic compound to be alkylated or acylated; and thenii. contacting a liquid reaction mixture comprising said aromatic compound and said alkylating or acylating agent in the presence or absence of a non-aqueous solvent with the catalyst obtained from step (i) in a stirred batch reactor fitted with a reflux condenser under vigorous stirring, in the presence or absence of an inert gas bubbling through the reaction mixture, at effective reaction conditions;iii. cooling the reaction mixture to a temperature about 30° C., removing said catalyst from the reaction mixture by filtration and then separating the reaction products from the reaction mixture, and optionally washing the used catalyst by non-aqueous solvent; and if desired,iv. reusing the used catalyst directly with or without drying for the subsequent reaction batch avoiding step (i), is disclosed. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7541417-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005222465-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6984760-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007232775-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7528210-B2 |
| priorityDate | 2000-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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