http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0673944-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_162d11f2cdf82765737b7ef78186fcbb |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5329 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C17-14 |
| filingDate | 1995-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2001-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0d186eef14763024cd088fd2361e7128 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fe8d766628bf6974718e606bc00ad99e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f0c41dae840bbe80bd43c75c5e1d972e |
| publicationDate | 2001-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0673944-B1 |
| titleOfInvention | Process for preparing 2,2'-bis(diphenyl-phosphinylmethyl)-1,1'binaphtyl and novel compounds belonging to this group of substances |
| abstract | Prodn. of 2,2'-bis(diphenylphosphinylmethyl)-1,1'-binaphthyls (I) comprises: (a) reacting 2,2'-dimethyl-1,1'-binaphthyl (II) with a brominating agent in a solvent to form 2,2'-bis(bromomethyl)-1,1'-binaphthyl (III) and other brominated binaphthyls; (b) opt. removing unreacted brominating agent, reacted brominating agent and/or solvent; and (c) reacting the prod. with an alkyl diphenylphosphinite of formula RO-P(Ar)2 (IV) at 70-180 degrees C, opt. in a solvent; where = R = 1-5C alkyl; and Ar = phenyl opt. mono- or disubstd. by 1-4C alkyl, CF3, F, Cl or Br. Also claimed are cpds. of formula (IA): Ar' = phenyl mono- or disubstd. by 1-4C alkyl, CF3, F, Cl or Br. Step (a) comprises reacting (II) with N-bromosuccinimide (NBS) in chlorobenzene and/or dichlorobenzene, either at -10 to +75 (esp. 0-40) degrees C in the presence of light with a wavelength of 10-10,000 nm, or at 25-150 (esp. 40-135) degrees C in the presence of a free radical source. Step (c) is effected at 100-170 (esp. 120-160) degrees C, opt. after replacing the (di)chlorobenzene with xylene and/or mesitylene. |
| priorityDate | 1994-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 123.