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Macrocyclic polyether compounds

Assignee: EIDP Inc
•
Filing: 1974-02-15
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Granted: 1976-10-19
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Expires: 1994-02-15
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Abstract

Abstract Macrocyclic polyether "crown" compounds of the formula ##EQU1## WHEREIN T is a C 2 -C 3 alkylene, A is ##EQU2## R being H or C 1 -C 18 alkyl, R 2 and R 3 being independently C 1 -C 18 alkyl, C 2 -C 4 alkenyl, or C 6 -C 14 aryl; Q and Z are independently 1,2-arylene (or saturated derivatives thereof) or substituted 1,2-arylene (or saturated derivatives thereof); a is 0, 1, 2, or 3; b is an integer from 3 to 20; y is 1 or zero; x 1 , x 2 , x 3 , and x 4 are integers independently selected to give a 15-60 atom ring. Such crown compounds are generally useful in the formation of complexes with ionic metal compounds, thus making it possible to use certain chemical reagents in media wherein they are normally insoluble.

Inventors

  • 👤 Charles J. Pedersen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 19:12
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/22; C07F7/2224

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 15 words
Macrocyclic polyether compounds of the formula ##SPC15## where A is ##EQU3## or --CH 2 --.
Claim 2
Dependent Claim 15 words
Macrocyclic polyether compounds of the formula ##SPC15## where A is ##EQU3## or --CH 2 --.
Claim 3
Dependent Claim 11 words
The compound of claim 1 wherein A is --CH 2 --.
Claim 4
Dependent Claim 9 words
The compound of claim 1 wherein A is ##EQU4##

References Cited (Backward Citations)

US3687978A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-10-19 1980-04-19 1980-10-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-10-19 1984-04-19 1984-10-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-10-19 1988-04-19 1988-10-19 $7700.00 Window Closed / Lapsed

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