Synthesize, crystal structure, heat capacities and thermodynamic properties of a potential enantioselective catalyst

Abstract

A new potential enantioselective catalyst derived from ferrocene, 1-{(R)-1-[(S)-2-(diphenylphosphino)ferrocenyl]ethyl}-benzimidazole (DPFEB), was prepared and its absolute structure was characterized by means of single crystal X-ray diffraction. The molar heat capacity of DPFEB was measured by means of temperature modulated differential scanning calorimetry over the temperature range of 200-530 K, and the thermodynamic functions of [H T -H 298.15 ] and [S T -S 298.15 ] were calculated. Further more, thermogravimetry experiment revealed that DPFEB exhibited a three step thermal decomposition process with the final residual of 28.7%.

The influence of trehalose–maltodextrin and lactose–maltodextrin matrices on thermal and sorption properties of spray-dried β-lactoglobulin–vitamin D3 complexes

“…The technique that gives the possibility to analyse many aspects of the thermal response of materials, including particularly the glass transition is modulated differential scanning calorimetry (ang. MDSC) [8]. It involves the application of a sinusoidal heating or cooling signal to a sample and the subsequent measurement of the reversing and non-reversing components of the heat flow response [9][10][11].…”

Selective Syntheses of Planar-Chiral Ferrocenes

“…The introduction of a nucleophile at the α carbon is usually achieved by starting from the corresponding acetate, which is quantitatively accessible upon treatment of the tertiary amine with excess acetic anhydride or, more conveniently, directly from the amine in glacial acetic acid. In this way, the NMe 2 moiety has been replaced by ammonia and primary and secondary amines ,,,,,,,,,,,, as well as phosphines, ,,,,,,,,,,, including heterocyclic species, ,,,,,,,,,,,− azides for 1,3-dipolar cycloadditions, carbon nucleophiles, ,, alcohols, , and thioles ,, as well as carboxylates ,,, and thiocarboxylates, giving upon hydrolysis the corresponding alcohols or thioles. Primary and secondary amines obtained can be transformed into imines, ,− ,,,,, amidines, , and amides upon treatment with carbaldehydes/ketones, formamides, or acid chlorides/anhydrides.…”

Preparation, Characterization and Antimicrobial Activity of Pd(II), Zn(II) and Cu(II) Complexes of Benzimidazoles and Schiff Bases Including Ferrocene Group

“…On the other hand, ferrocene-based benzimidazole derivatives are also of interest to researchers due to their broad applications in enantioselective and heterogeneous catalysts [29,30] , ionic recognition [3133] , as fluorescent probes [34] and to prepare bimetallic metal complexes [35] . Also, various biological activities of some ferrocenyl benzimidazole derivatives were reported, such as growth inhibition of cancer cells [5,6] , fungicidal effect [36] and antimalarial activity [37] .…”