Self-Assembly of Ball-Shaped Molecular Complexes in Water was written by Grawe, Thomas;Schrader, Thomas;Zadmard, Reza;Kraft, Arno. And the article was included in Journal of Organic Chemistry in 2002.Reference of 172606-26-7 The following contents are mentioned in the article:
The authors present a simple and versatile access to spheroidal mol. assemblies with pronounced stability in highly polar solvents. These complexes are composed of doubly and triply charged complementary building blocks based on ammonium or amidinium cations and phosphonate anions. Their high thermodn. stability is best explained by the formation of a cyclic array of alternating pos. and neg. charges interconnected by a regular network of H bonds. Association constants reach 106 M-1 in methanol and often surpass 103 M-1 in water. The broad range of binding energies correlates well with the varying degree of preorganization of both complex partners. As a byproduct of these studies, new recognition motifs for histidine and arginine esters and the unsubstituted guanidinium ion are proposed. The addnl. introduction of Me groups in the 2-, 4-, and 6-positions of the central benzene ring in either cations or anions causes a marked drop in the corresponding Ka values of 1 order of magnitude; the related rotational barriers were estimated at 0.3-2.1 kcal/mol. Spontaneous formation of defined 2:1 complexes from three components also was observed This study involved multiple reactions and reactants, such as 1,1′,1”-((2,4,6-Trimethylbenzene-1,3,5-triyl)tris(methylene))tris(1H-pyrazole) (cas: 172606-26-7Reference of 172606-26-7).
1,1′,1”-((2,4,6-Trimethylbenzene-1,3,5-triyl)tris(methylene))tris(1H-pyrazole) (cas: 172606-26-7) belongs to pyrazole derivatives. An alternative way to synthesize multisubstituted pyrazoles is the Csingle bondH arylation of simple pyrazoles. Pyrazole the presence of this nucleus in pharmacological agents of diverse therapeutic categories such as celecoxib, a potent anti-inflammatory, the antidepressant agent fezolamide have proved the pharmacological potential of the pyrazole moiety. Reference of 172606-26-7
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics