http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4118279-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_eccd894c99fea2d1c0c8735872bb2309 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-3469 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D239-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D239-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D239-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D239-34 |
| filingDate | 1991-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0d9c880c69785980127c82d75af1166e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_054d91016607daedb69eabfbccdab5cf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_617969b5a705d12b680d2434703aa311 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3359892d031f1cd7d63a702c7599b3e2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_154f47252125f5bf2d5607d34422d6b7 |
| publicationDate | 1992-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4118279-A1 |
| titleOfInvention | 2- (2-FLUORPHENYL) -PYRIMIDINE |
| abstract | New 2-(2-fluorophenyl)-pyrimidine derivs. of formula (I) are claimed. In (I) X is F or H; n is 1-16; m is 1-14; and s,t are 0 or 1. (I) is produced by etherification of the corresp. phenol (IIA) (formula (I) with n = 0, s = 1) with an alkylating agent of formula CnH2n+1-Y (IIIA) (with Y = hal. -0S01CF3, -0S02C7H7 or 0H), or by etheration of the corresp. pyrimidin-5-ol (IIB) (formula (I) with the gp. -(0)t-CH2CH2-(CF2)m-X replaced by 0H) with an alkylating agent of formula YCH2CH2(CF2)mX (IIIB), in presence of a base or a dehydrating agent. Also claimed are phenols of formula (IIA). USE/ADVANTAGE - (I) are useful as components of liq. crystal (LC) media, esp. with chiral tilted smectic phases. Incorporation of (I) overcomes the disadvantages of prior art materials (low chemical, thermal and light stability, low spontaneous polarisation, ferroelectric phases in a too-small temp. range at too high temp. etc.), and enables the prodn. of partic. stable chiral tilted smectic phases with a good ferroelectric phase range, good viscosity, high spontaneous polarisation and the ability to be supercooled without crystallisation. |
| priorityDate | 1991-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.