A Cu(ii) metal–organic framework with significant H2 and CO2 storage capacity and heterogeneous catalysis for the aerobic oxidative amination of C(sp3)–H bonds and Biginelli reactions. Issue 5 (12th January 2018)

• Record Type: Journal Article
• Authors: Gupta, Anoop K.; De, Dinesh; Tomar, Kapil; Bharadwaj, Parimal K.
• Is Part Of: Dalton transactions. Volume 47:Issue 5(2018)
• Page Start: 1624
• Page End: 1634
• Publication Date: 2018-01-12
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7dt04006g
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : 1 exhibits significant H2, CO2 storage capacity and heterogeneous catalytic activity for oxidative amination of C(sp 3 )–H bonds and Biginelli reactions. Abstract : A Cu(ii ) metal–organic framework, {[Cu2 (L)(H2 O)2 ]·(5DMF)(4H2 O)} n (1 ), has been synthesized using an angular tetracarboxylic acid ligand (H4 L ) incorporating both trifluoromethyl (–CF3 ) and amine (–NH2 ) groups. Notably, the framework possesses high water and thermal stability. At atmospheric pressure, the activated framework1′ exhibits substantially high amounts of CO2 (35.5 and 20.8 wt% at 273 and 298 K respectively) and H2 (1.72 wt% at 77 K) adsorption. Also, 1′ exhibits excellent catalytic activity for the condensation–cyclization reaction between 2-benzoyl pyridine and different benzylamines via oxidative amination of the C(sp 3 )–H bond to form 1, 3-diarylated imidazo[1, 5- a ]pyridines under mild aerobic conditions. In addition to this, 1′ shows excellent heterogeneous catalytic activity in Biginelli reactions. The solid catalyst could be recycled several times without significant loss in the catalytic activities.