US 11,787,777 B1
Crown ether amines and methods of use
Andrew Kocen, Port Washington, NY (US); Rehanah Sejoubsari, Port Washington, NY (US); and Ahmad Arabi Shams Abadi, Port Washington, NY (US)
Assigned to Pall Corporation, Port Washington, NY (US)
Filed by Pall Corporation, Port Washington, NY (US)
Filed on Nov. 4, 2022, as Appl. No. 17/981,162.
Int. Cl. C07D 323/00 (2006.01); B01D 53/22 (2006.01); B01D 71/06 (2006.01)
CPC C07D 323/00 (2013.01) [B01D 53/228 (2013.01); B01D 71/06 (2013.01)] 20 Claims
 
1. A material comprising (i) a crown ether of formula (I):

OG Complex Work Unit Chemistry
and/or (ii) a crown ether of formula (II):

OG Complex Work Unit Chemistry
or a salt thereof, wherein each m independently is an integer from 1 to 8, each “custom character” designates an optionally present bond and/or structure, each X independently is —N(R1)2, —N*(R1), —N**, —N*(R1)2+Z−, or —N**(R1)+Z−, provided at least one X is —N*(R1), —N**, —N*(R1)2+Z−, or —N**(R1)+Z−, wherein each R1 independently is hydrogen or C1-6 alkyl, each Z is optionally present and independently is a counterion to balance the charge on nitrogen, and * represents a bond to a remainder of the material.