Patent ID: 6342634
Filing Date: 2002-01-29
Classification: C07C,C07D,C22B,G01N,Y02P

Abstract:
A calixarene dimer comprising a calixarene of formula (I) wherein:L is [â€”CH2â€”] or [â€”Oâ€”CH2â€”Oâ€”] and is the same or different between each aryl group; R5 is H, halogen, or is a C1-C10 aliphatic hydrocarbyl group, C6-C20 aryl group or a C6-C20 hydrocarbylaryl group, any of which is optionally substituted by one or more halo or oxo groups or is interrupted by one or more oxo groups, and R5 is the same or different on each aryl group; R1 is a carboxy group which is or is not protonated or protected; two groups out of R2, R3 and R4 are H; and the one group out of R2, R3 and R4 which is not H is an amide group of formula (II) wherein n is 1, 2 or 3 and R6 and R7 are H, halogen or a C1-C10 aliphatic hydrocarbyl group, and are the same or different on each carbon, and wherein R8 and R9, which is the same or different, are H or a C1-C10 aliphatic hydrocarbyl group which is substituted by one or more halo groups, or is a cycloaliphatic ring formed by R8 and R9 together wherein one of the R8 and R9 groups is conjugated to a second calixarene.