| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6cfc033f059d282fcd915bc8be2ae53f |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B7-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-36 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B7-02 |
| filingDate |
1989-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0d0605e95cf492ff4e95ccd421e01d64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_383ec5dad668724f5558960e8efe6b39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fff2b5b31a181ed85475264bfe1ed51e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e8d11ef9732ce0e90d8ac885ed9f561f |
| publicationDate |
1990-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4973706-A |
| titleOfInvention |
Process for the preparation of indigo compounds |
| abstract |
Disclosed is a process for preparing an indigo compound in improved yield by reacting indole or other indole compound having no substituent at the 2- and 3-positions with an organic hydroperoxide in the presence of an additive selected from the group consisting of (1) a carboxyl compound and (2) a boric acid ester compound. The yield of the indigo compound can further be increased by using a metallic compound catalyst capable of oxidizing carbon atom at the 3-position of the indole compound, such as a compound of a metal of group 4A, 5A or 6A of the periodic table. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5424453-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5109137-A |
| priorityDate |
1988-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |