EP0143564A2
Expired / Lapsed
EP
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Crown ether Derivatives
Assignee: Magyar Tudomanyos Akademia Kutatas es Szervezetelemzo Intezete
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Filing: 1984-11-01
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Granted: —
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Expires: 2004-11-01
Abstract
Abstract Crown ether derivatives of the general formula I <CHEM> wherein Z<1> is a group of the general formula <CHEM> (in which Ra represents an alkyl group having 1-4 carbon atoms and Rb represents an alkyl group having 1-20 carbon atoms) are useful in the preparation of ion-selective electrodes having a long lifetime.
Inventors
- 👤 Lászlo Tóke
- 👤 Béla Agai
- 👤 István Bitter
- 👤 Ernó Pungor
- 👤 Klára Szepesváry
- 👤 Ernó Lindner
- 👤 Mária Forró
- 👤 Jenó Havas
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 03:12
CPC Classifications
C; C07; C07D; C07D405/00; C07D405/14; C07D323/00; C07D407/00; C07D407/14; G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/333; G01N27/3335
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
37 words
Crown compounds of general formula I wherein Z 1 is a group of formula in which R a represents an alkyl group having 1-4 carbon atoms and R b represents an alkyl group having 1-20 carbon atoms.
Claim 2
Dependent Claim
37 words
Crown compounds of general formula I wherein Z 1 is a group of formula in which R a represents an alkyl group having 1-4 carbon atoms and R b represents an alkyl group having 1-20 carbon atoms.
Claim 3
Dependent Claim
15 words
A compound of general formula I according to claim 1 selected from: 2,2-diethyl-propylene-1,3-bis-N,N'-[2"-nitro-4",5"-(1''',4''',7''',10''',13'''-pentaoxacyclopentadeca-2'''-ene)-phenyl]-carbamate, 2,2-di-n-butyl-propylene-1,3-bisN,N'-[2"-nitro-4",5"-(1''',4''',7''',10''',13'''-pentaoxacyclopentadeca-2'''-ene)-phenyl]-carbamate, 2-n-dodecyl-2-methyl-propylene-1,3-bis-N,N'-[2"-nitro-4",5"-(4''',4''',7''',10''',13'''-pentaoxacyclopentadeca-2'''-ene)-phenyl]-carbamate.
Claim 4
Dependent Claim
66 words
Process for the preparation of crown compounds of general formula I as defined in claim 1, which comprises a) reacting a crown compound of formula II with a compound of formula III (wherein Z 1 is as defined in claim 1) in an aprotic solvent, or b) reacting a crown compound of formula I' (wherein Z 2 is as defined in claim 1) with nitric acid.
Claim 5
Dependent Claim
24 words
A potassium ion-selective membrane electrode which contains, as active substance at least one crown compound of general formula I as defined in claim 1.
Claim 6
Dependent Claim
52 words
An electrode according to claim 4 in which the membrane is formed from active substance, optionally mixed with a plasticizer and/or further additives, preferably sodium tetraphenyl borate or potassium p-chlorotetraphenyl borate, bound to a carrier, the compound(s) of formula I being present in an amount of 0.1-10% by weight of the membrane.
Claim 7
Dependent Claim
54 words
An electrode according to claim 5 in which the membrane comprises 0.2-10% by weight of active substance, 55-75% by weight of a plasticizer, said plasticizer being a substance having a dielectric constant of 2-30, and a carrier, said carrier being a polymer, preferably PVC or a silicon rubber, having a dielectric constant of 2-30.
Claim 8
Dependent Claim
25 words
An electrode according to claim 5 or claim 6 wherein the plasticizer comprises a phthalic acid ester, a sebacic acid ester or o-nitro-phenyl octyl ether.
Claim 9
Dependent Claim
42 words
An electrode according to any one of claims 4 to 7 wherein the membrane is bound to a substance which possesses electron and/or ion-conducting or semi-conducting properties, preferably to metallic silver, silver chloride wire, platinum wire, gold fibre, graphite rod or silica.
Claim 10
Dependent Claim
27 words
A membrane electrode according to any one of claims 4 to 8 wherein the active substance comprises at least one of the following: 2,2-diethyl-propylene-l,3-bis-N,N'-[2"-nitro-4",5"-(1''',4''',7''',10''',13'''-pentaoxacyclopentadeca-2'''ene)-phenyl]-carbamate, 2,2-di-n-butyl-propylene-1,3-bis-N,N'-[2"-nitro-4",5"-(1''',4''',7''',10''',13'''-pentaoxacyclopentadeca-2'''- ene)-phenyl]-carbamate, 2-n-dodecyl-2-methyl-propylene-1,3-bis-N,N'-[2"-nitro-4",5"-(1''',4''',7''',10''',13'''-pentaoxacyclopentadeca-2-'''ene)-phenyl]-carbamate.
References Cited (Backward Citations)
No citation records indexed.
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