http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-531540-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-65746 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-145 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-6574 |
| filingDate | 1998-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2003-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4733d063403009d844374df1df95eebf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5dbdd343985e94c42042b676d4a730b5 |
| publicationDate | 2003-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-531540-B |
| titleOfInvention | Selective synthesis of organodiphosphite compounds |
| abstract | A process for the preparation of organodiphosphites of the general formula (R1O)2P(OZO)P(OR1)2 wherein R1 is phenyl, unsubstituted or substituted with C1 to C6 alkyl groups and Z is selected from radicals defined by the formulae I to IV: wherein R2 and R9 are the same and are selected from H, C1 to C6 alkyl, and C1 to C6 alkoxy; R3 and R8 are the same and are selected from H, C1 to C6 alkyl, and C1 to C6 alkoxy; R4 and R7 are the same and are selected from H, C1 to C6 alkyl, and C1 to C6 alkoxy; R5 and R6 are the same and are selected from H, C1 to C6 alkyl, and C1 to C6 alkoxy; or wherein: X is O, S, or CH(R18); R10 and R17 are the same and are selected from H, C1 to C6 alkyl, and C1 to C6 alkoxy; R11 and R16 are the same and are selected from H, C1 to C6 alkyl, and C1 to C6 alkoxy; R12 and R15 are the same and are selected from H, C1 to C6 alkyl, and C1 to C6 alkoxy; R13 and R14 are the same and are selected from H, C1 to C6 alkyl, and C1 to C6 alkoxy; and R18 is H or C1 to C6 alkyl; or wherein: R19 and R20 are H; or wherein: A is O, S, CH(R24); R22 and R23 are H; R24 is H or C1 to C6 alkyl, which comprises: (a) treating at a temperature between about -25 DEG C and 10 DEG C one molar equivalent of PCl3 with two molar equivalents of R1OH; (b) treating the solution of step (a) at between -25 DEG C and 10 DEG C with at least two equivalents of an organic base to produce (R1O)2PCl and substantially insoluble salt formed from the organic base and HCl which is formed by the reaction of R1OH and PCl3; and (c) reacting at a temperature of between -25 DEG C and 10 DEG C the (R1O)2PCl with one half molar equivalent of HO-Z-OH, provided if less than three equivalents of the organic base are utilized in step (b), than a sufficient quantity of additional organic base is assed to bring the total equivalents of organic base utilized in the process to at least three. |
| priorityDate | 1997-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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