Cyclic trimeric perfluoro-o-phenylenemercury: a highly efficient phase transfer catalyst for nitration of aromatic substrates with dilute nitric acid

Coinage-Metal-Based Cyclic Trinuclear Complexes with Metal–Metal Interactions: Theories to Experiments and Structures to Functions

“…The catalytic abilities of Cu­(I) CTCs have been demonstrated in click reactions and alkyne transformations; however, these CTCs cannot retain nine-membered conformations. Although Hg­(II) CTCs are also proven efficient in catalyzing phase-transfer nitration of aromatic substrates, , the toxicity of Hg complexes should be carefully treated. For coinage-metal-based complexes, the expense is a problem that cannot be bypassed.…”

Coordination Chemistry of Anticrowns. Synthesis and Structures of Complexes of the Perfluorinated Three‐Mercury Anticrown (o‐C6F4Hg)3 with Monohalogenobenzenes

“…For this macrocycle, a large number of complexes with different anions (F – , Cl – , Br – , I – , NO 3 – , SO 4 2– , etc) and neutral Lewis bases (carbonyl compounds, nitriles, arenes, nitro compounds, etc) have been prepared and structurally characterized. The first data on the use of 1 in catalysis,, for molecular recognition, as an ionophore for ion‐selective electrodes, and for the development of new luminescent materials have also been obtained.…”

Peroxy Compounds as Eco-Friendly Catalysts for Nitration of Aromatic Compounds Using Sodium Nitrite in Aqueous Bisulfate Medium

“…To overcome these issues, several modified protocols have been developed over the years. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] One of the forefront reagents developed in direction is nitronium tetrafluoroborate, [(NO2) + (BF4) -], which has several advantages over nitric acid, apart from supplementing isolated the active nitronium ion ingredient. 3 There are several other protocols that avoided the use of sulfuric acid completely, but used small amounts of HNO3 along with other co-catalysts to accomplish nitration.…”

“…3 There are several other protocols that avoided the use of sulfuric acid completely, but used small amounts of HNO3 along with other co-catalysts to accomplish nitration. [4][5][6][7][8][9][10][11][12][13][14] Micelle-forming surfactants, [15][16][17] supported catalysts such as P2O5 immobilized on silica gel, 18 metalmodified montmorillonite, 19 Al(H2PO4)3 (ref. 20), and V(V) heteropolyacids 21 have also been used as efficient catalysts to synthesize nitroaromatic compounds in the presence of dilute HNO3.…”