http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-920914-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ac40ffdd0f9b7563bab9d5dccaa8a6b3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D317-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-45 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C59-185 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C49-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-185 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-45 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-26 |
| filingDate | 1958-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_321c55273c2f863d682405e7e779b2ba http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e416c3e3b3b1b9557363c2c0db376a4b |
| publicationDate | 1963-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-920914-A |
| titleOfInvention | New carbonyl compounds and their precursors and the production thereof |
| abstract | The invention comprises compounds of formula <FORM:0920914/IV(a)/1> where Q is a carbonyl, hydroxymethylene, acyloxymethylene or ketalised (including cyclically ketalised) carbonyl group, R is alkyl, R5 is -OH, -OR6 or (except when Q is a carbonyl group) -R6, R6 being alkyl, R1 and R2 are alkyl and n is 1 or 2. Compounds of formula I in which R5 is alkyl may be prepared by reacting an acid <FORM:0920914/IV(a)/2> or a halide thereof with a metal alkyl. An acid of formula II may be obtained by hydrolysis of an ester of formula I where R5 = -OR6. A carbonyl group Q of such an ester may be ketalised with a mono- or di-hydric alcohol or a cyclic ketalising agent, e.g. 2ethylenedioxybutane, in the presence of ptoluenesulphonic acid, or may be hydrogenated to a hydroxymethylene group which may then be acylated. A keto ester of formula I wherein Q is carbonyl and R5 = -OR6 may be obtained by reacting an acid halide <FORM:0920914/IV(a)/3> where X is halogen with a metal alkyl. The acid halide III may be obtained by thionyl chloride on a monoester <FORM:0920914/IV(a)/4> obtainable by partial hydrolysis, e.g. with alcoholic KOH at normal temperatures, of the diester. The semicarbazone of methyl 2,2-dimethyl5-ketoheptanoate is prepared in an example. The Provisional Specification omits the limitation that R5 is not alkyl when Q is a carbonyl group in compounds of formula I. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0247653-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0057731-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0247653-A3 |
| priorityDate | 1958-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.