http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3048031-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_067fa7a6d043b14968b8dca94aa94e37 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D241-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D241-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D241-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D249-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D241-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D241-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D241-12 |
| filingDate | 1980-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_be7817518ab04b21408c16cdfafcb006 |
| publicationDate | 1981-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-3048031-A1 |
| titleOfInvention | METHOD FOR PRODUCING SUBSTITUTED PYRAZINE |
| abstract | (1) Substd. pyrazines having formula (I) (where R2, R3 and R6 are opt. different, linear or branched, satd. or unsatd. alkyl; or 1 substit. is H while the others are alkyl; R and R' each is linear or branched, satd. or unsatd. alkyl, or (i) 1 substit. is H while the other is alkyl, or (ii) 1 substit. is H and the other is opt. substd. aryl, an araliphatic or furyl gp. or a gp. having formula (A) or (iii) R and R' together form an alkylene gp.) are prepd. by adding a carbonyl cpd. having formula R-CO-R' (II) on to a dihydropyrazine having formula (III), in the presence of a basic agent. (2) Bicyclic pyrazines having formula (IV) (where the dotted line denotes a plain or double bond; R', R" and R"' each is linear or branched, satd. or unsatd. alkyl, alicyclic or aromatic hydrocarbyl or H; or 2 substituents together can form an aliphatic gp. while the other is a gp. as above) are prepd. by adding a carbonyl deriv. having formula (V) (where the dotted line denotes a double or triple bond and n is 0 or 1) to a dihydropyrazine having formula (III where R6 is H) in the presence of a basic agent. Pyrazines are used as aroma constituents in foods. The dihydropyrazine starting materials (III) and (IV) are easily prepd. by reacting an alkylene diamine with an alpha, beta-diketone. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009030649-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5182283-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009030649-A2 |
| priorityDate | 1979-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 88.