http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-527396-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_966a6c1f382ec9bcb5e3839dfd73e5b8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-72 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-72 |
| filingDate | 1939-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1940-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-527396-A |
| titleOfInvention | Process for the manufacture of condensation products from trimethyl-hydroquinone andalkylene halides |
| abstract | 527,396. Vitamins. HOFFMAN-LA ROCHE & CO., AKT.-GES., F. April 11, 1939, No. 10973. Convention date, April 12, 1938. Samples furnished. [Class 2 (iii)] Compounds corresponding to the general formulae are prepared by condensing trimethylhydroquinone with alkylene halides, other than phytyl halides, of the general formula X CH 2 - CH =CR<SP>1</SP>R<SP>11</SP>, in which X stands for halogen, and R<SP>1</SP> and R<SP>11</SP> for hydrogen or alkyl or alkyline groups in an indifferent solvent in the presence of acid condensing agents. If R<SP>1</SP> and R<SP>11</SP> represent hydrogen, a compound of formula I is obtained. If R<SP>1</SP> and R<SP>11</SP> represent alkyl or alkylene groups, compounds of formula II are obtained. Zinc chloride or aluminium chloride may be used as condensing agents. The products are useful medicinally. In the examples (1) trimethyl-hydroquinone condensed with geramyl bromide in the presence of anhydrous zinc chloride yields a compound of the formula It is purified by transformation into its allophanate ; (2) trimethyl-hydroquinone is condensed with alkyl bromide in the presence of anhydrous zinc chloride yielding 2.4.6.7.- tetramethyl-5-oxy-cumarane of the formula The samples furnished under Sect. 2 (5) of the Acts comprise (1) the allophanate of the compound from trimethylhydroquinone and geramyl bromide, obtained according to example 1 , (2) 2.4.6.7-tetramethyl-5-oxy-cumarane obtained in accordance with example (2) ; (3) 2.5.7.8-tetramethyl-6-oxy-chromane prepared by condensing crotyl bromide with trimethylhydroquinone. |
| priorityDate | 1938-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.