http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1224018-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dc2f7134efa50484bb359fda73782848 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C271-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C271-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C271-24 |
| filingDate | 1968-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1971-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1224018-A |
| titleOfInvention | Carbamates and pesticidal preparations containing them |
| abstract | 1,224,018. Carbamates. CIBA Ltd. 25 Sept., 1968 [25 Sept., 1967], No. 45562/68. Heading C2C. [Also in Division A5] The invention relates to carbamates of the general formula in which R 1 represents a hydrogen atom or a C 1 -C 4 alkyl group, R 2 represents a hydrogen atom, the methyl or an acyl group, R 3 represents a hydrogen atom, a C 1 -C 4 alkoxy group or a carbamoyloxy group substituted by C 1 -C 4 alkyl groups, R 4 represents a hydrogen atom or a methyl group, and in which the double bound in the 6,7-position may be epoxidized or hydrogenated. The carbamates may be prepared by reaction of suitable endomethylene naphthols with alkyl isocyanates or with carbamoyl chlorides which may be substituted by R 1 and R 2 , or by reaction of suitable endomethylene - naphtholo - chlorocarbonates with methylamine or an amine substituted by R 1 and R 2 . In an example 5, 8-dihydro-5,8-endomethylene - 4 - methoxynaphthol - (1) is first prepared by reacting 5,8-dihydro-5,8-endomethylene - 1,4 - naphthohydroquinone with dimethyl sulphate in sodium hydroxide solution and the product is reacted with methylisocyanate to produce [5,8 - dihydro - 5,8 - endomethylene - 4 - methoxy - 1 - naphthyl] - N - methyl carbamate. By hydrogenating the latter (5,8 - endomethylene - 4 - methoxy- 5,6,7,8 - tetrahydro - 1 - naphthyl) - N - methylcarbamate is produced and by reacting the latter with acetic anhydride (5,8-endomethylene - 4 - methoxy - 5,6,7,8 - tetrahydro - 1 - naphthyl) - N - acetyl - N - methyl - carbamate is produced. Other examples are given. |
| priorityDate | 1967-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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