http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102005023989-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_49b7c4eca7dd70bca1366a6b8a975c98 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F5-025 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F5-02 |
| filingDate | 2005-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_768f458d11d33347ccc103e300dd43fb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bf51c27c5379ee1c874b21ba69f9e69c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4010c9c9b7568f26aa077e2dbc7c8052 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2bcf83b63b4460b71e565f06a1a5d5db |
| publicationDate | 2006-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-102005023989-A1 |
| titleOfInvention | Process for the preparation of 2-formylfuran-4-boronic acid by metallation of 4-halofurfural acetals in the presence of suitable boronic acid esters or anhydrides |
| abstract | Process for the preparation of furfural-4-boronic acid (III) by reacting furfural acetals (I) which are halogen-substituted in the 4-position, with boronic acid esters or anhydrides (II), by metallating the compound (I) with simultaneous or subsequent reaction with a boronic acid ester or anhydride (II) to form an acetal protected furfural-4-boronic acid ester and subsequent acid hydrolysis, with elimination of the acetal protecting group, to furfural-4-boronic acid (III), in which X is chlorine, bromine or iodine, R is a branched, unbranched and / or cyclic, optionally substituted C 1 -C 20 , in particular C 1 -C 8 -alkyl radical, an optionally substituted C 6 -C 12 -aryl radical or an optionally substituted C 3 -C 8 -cycloalkyl radical where the two radicals R together can form a ring; R ', R'',R''' independently of one another are acyclic or cyclic, branched or unbranched, optionally substituted C 1 -C 20 -alkyl groups or optionally substituted aryl groups, where appropriate two of the radicals R ', R''andR'''together form a ring or stand for further radicals B (OR) 3 . |
| priorityDate | 2005-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 114.