Nitrogen-containing oxacalixarene and calixarene derivatives, polymers including groups related to such derivatives, and use of such compounds
US5043415A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1988 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Sep 23, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D323/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The application describes nitrogen-containing an oxacalixarene or calixarene derivative of formula I: ##STR1## wherein m'+m"=0-8 PA1 n=0-8 PA1 m'.gtoreq.1/2(m'+M") PA1 3.ltoreq.m'+m"+n.ltoreq.8 PA1 if n=0, m'+m".gtoreq.4 PA1 R.sup.3 is H, halogen, or hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof and R.sup.3 may be the same or different on each aryl group; PA1 R.sup.1 and R.sup.15 which may be the same or different are H or hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof; PA1 R.sup.2 is selected from: PA2 R.sup.4 which is H, or hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof, ##STR2## wherein R.sup.5 and R.sup.6 which may be the same or different are H, or hydrocarbyl, aryl, hydrocarbylaryl, or a substituted derivative thereof, PA2 -OR.sup.1, wherein R.sup.1 is as defined above PA2 and R.sup.17 which is a residue of a hydrocarbyl, aryl, or hydrocarbylaryl group or of a substituted derivative thereof providing a bond to another oxacalixarene or calixarene derivative of formula I wherein R.sup.2 is R.sup.17. The derivatives may be polymer-bound. Use of the derivatives for sequestration of metals is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.