US 10,889,601 B2
Separations using boron containing hydrocarbon sponges
Leonard MacGillivray, Iowa City, IA (US); and Gonzalo Campillo-Alvarado, Iowa City, IA (US)
Assigned to University of Iowa Research Foundation, Iowa City, IA (US)
Filed by UNIVERSITY OF IOWA RESEARCH FOUNDATION, Iowa City, IA (US)
Filed on Feb. 11, 2020, as Appl. No. 16/788,027.
Claims priority of provisional application 62/804,052, filed on Feb. 11, 2019.
Prior Publication US 2020/0255454 A1, Aug. 13, 2020
Int. Cl. C07F 5/02 (2006.01); C07C 7/12 (2006.01); C07D 333/10 (2006.01)
CPC C07F 5/025 (2013.01) [C07C 7/12 (2013.01); C07D 333/10 (2013.01)] 20 Claims
 
1. A compound of formula (I):

OG Complex Work Unit Drawing
or a salt thereof, wherein:
R1 is aryl or heteroaryl that is optionally substituted with one or more groups independently selected from the group consisting of nitro, carboxy, halo, cyano, (C1-C6)alkyl, (C3-C6)cycloalkyl, (C1-C6)alkoxy, (C2-C6)alkenyl, (C2-C6)alkynyl, (C1-C6)alkanoyl, (C1-C6)alkoxycarbonyl, (C1-C6)alkylthio, (C2-C6)alkanoyloxy, —OH and —C(═O)(C1-C6 alkyl), wherein any (C1-C6)alkyl, (C3-C6)cycloalkyl, (C1-C6)alkoxy, (C2-C6)alkenyl, (C2-C6)alkynyl, (C1-C6)alkanoyl, (C1-C6)alkoxycarbonyl, (C1-C6)alkylthio and (C2-C6)alkanoyloxy is optionally substituted with one or more groups independently selected from the group consisting of halo, carboxy, —OH and cyano; and
R2 is aryl or heteroaryl that is optionally substituted with one or more groups independently selected from the group consisting of nitro, carboxy, halo, cyano, (C1-C6)alkyl, (C3-C6)cycloalkyl, (C1-C6)alkoxy, (C2-C6)alkenyl, (C2-C6)alkynyl, (C1-C6)alkanoyl, (C1-C6)alkoxycarbonyl, (C1-C6)alkylthio, (C2-C6)alkanoyloxy, —OH and —C(═O)(C1-C6 alkyl), wherein any (C1-C6)alkyl, (C3-C6)cycloalkyl, (C1-C6)alkoxy, (C2-C6)alkenyl, (C2-C6)alkynyl, (C1-C6)alkanoyl, (C1-C6)alkoxycarbonyl, (C1-C6)alkylthio and (C2-C6)alkanoyloxy is optionally substituted with one or more groups independently selected from the group consisting of halo, carboxy, —OH and cyano.