http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-960738-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7f6e33603375c486b0ab3505830af9e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07H17-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07H15-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D309-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D407-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07H3-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D309-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H17-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D407-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H15-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H3-02 |
| filingDate | 1962-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1964-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-960738-A |
| titleOfInvention | A new process for preparing dl-ribose |
| abstract | DL-ribose is prepared by subjecting a compound of formula R-O-CH2-CH=CH-R1, in which R is a 2-tetrahydropyranyl or 2-tetrahydrofuryl group and R1 is a hydrogen atom, a C 1-C3 alkyl group: <FORM:0960738/C1/1> to ozone oxidation followed by decomposition of the ozonide to form a compound of formula: R-O-CH2-CHO; reacting this compound in an inert solvent at a temperature in the range -60 DEG C. to 100 DEG C. with a compound of formula: <FORM:0960738/C1/2> in which M is an alkali metal or MgX (X is Cl, Br or I), and R2 is a C 1-C3 alkyl group, to give a compound of formula: <FORM:0960738/C1/3> subjecting this compound to partial hydrogenation is the presence of a palladium, platinum or nickel catalyst to form a compound having the formula: <FORM:0960738/C1/4> reacting the latter compound with a permanganate, hydrogen peroxide or osmium tetroxide in an inert solvent at 0 DEG to -30 DEG C. to form a compound of formula: <FORM:0960738/C1/5> and treating this latter compound with a dilute mineral acid. The allyl alcohol derivatives of formula R-O-CH2-CH=CHR used as starting materials are prepared as follows:-(a) the derivatives in which R1 is a hydrogen atom are prepared by reacting allyl alcohol with dihydropyran or dihydrofuran in the presence of a trace of mineral acid; and (b) those in which R1 is: <FORM:0960738/C1/6> are obtained by reacting butynediol with dihydropyran and/or dihydrofuran in the presence of a trace of mineral acid and partially hydrogenating the resulting compound. |
| priorityDate | 1961-04-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.