Calixarene and oxacalixarene derivatives and use thereof of sequestration metals
US5210216A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1990 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Dec 10, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/92
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Calixarene and oxacalixarene derivatives of the formula IV: ##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.15 is H or hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof; PA1 X is selected from ##STR2## wherein R.sup.7 and R.sup.8 which may be the same or different are H or hydrocarbyl (including a cycloaliphatic ring formed by R.sup.7 and R.sup.8 together), aryl, hydrocarbylaryl or a substituted derivative thereof; R.sup.9 is --OH, --NH.sub.2, --NHC(O)NH.sub.2 or --NHAr, wherein Ar is aryl or a substituted derivative thereof, PA1 n' is 0 or 1. Use of the compounds for sequestration of metals is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.