| abstract |
A composite sorbent composition comprising a polymeric adsorbent; and an extractant having the formula, or a hydrate thereof, wherein Z is —C(O)— or —C(R′)(R″)— wherein R′ and R″ are each hydroxyl; and R 1 , R 2 , R 3 , and R 4 are each independently hydrogen, halogen, hydroxyl, cyano, nitro, amino, —C(O)H, —C(O)OH, —C(O)NH 2 , alkyl, alkenyl, alkynyl, alkoxy, alkanoyl, alkylamino, alkyl carboxamide, alkyl ester, heteroalkyl, haloalkyl, haloalkoxy, cycloalkyl, aryl, arylalkyl, aryloxy, heterocycloalkyl, heteroaryl, heteroaryloxy, or heteroarylalkyl, each of which R 1 , R 2 , R 3 , and R 4 is unsubstituted or substituted with one or more substituents independently chosen from halogen, hydroxyl, WO 2019/023355 A1 cyano, nitro, sulphonato, amino, —C(O)H, —C(O)OH, —C(O)NH 2 , alkyl, alkoxy, alkylamino, heteroalkyl, haloalkyl, haloalkoxy, cycloalkyl, aryl, arylalkyl, aryloxy, heterocycloalkyl, heteroaryl, heteroaryloxy, or heteroarylalkyl; or R 1 and R 2 , R 2 and R 3 , or R 3 and R 4 are together a group —O—CH 2 —O—, a group —CH 2 —O—CH 2 —, or a group —CH 2 —CH 2 —CH 2 —CH 2 —. |