16209-00-0, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 16209-00-0, name is 4-(1H-Pyrazol-1-yl)benzoic acid, This compound has unique chemical properties. The synthetic route is as follows.
An aqueous solution was prepared by adding 4-(1H-pyrazole-1-yl)benzoic acid (0.085 g, 0.454 mmol) to water (50 ml). The complex (108) sulfate, namely, the [Cp*Ir(H2O)3]2+ sulfate, produced in Step 2 (0.20 g, 0.423 mmol) was added to this aqueous solution in an argon atmosphere, and the resultant mixture was heated to reflux for 12 hours in the dark. After the reflux, this solution was filtered through a membrane filter (manufactured by ADVANTEC, made of PTFE (polytetrafluoroethylene)). This filtrate was evaporated to remove moisture therefrom and then was vacuum-dried. Thus, desired iridium mononuclear aqua complex (13) sulfate, namely, [IrCp*(4-(1H-pyrazole-1-yl-kappaN2-)benzoic acid-kappaC3)(H2O)]+ sulfate, was obtained in the form of yellow powder (the yield calculated based on the sulfate of [Cp*Ir(H2O)3]2+/-: 94%). The instrumental analysis values of the [IrCp*(4-(1H-pyrazole-1-yl-kappaN2-)benzoic acid-kappaC3)(H2O)]+ sulfate are shown below. FIG. 22 shows the measurement results obtained by CV (cyclic voltammetry). In order to measure the elementary analysis values, the iridium mononuclear aqua complex (13) was converted to the above-described zero-valent complex (14), which was isolated by crystallization. These elementary analysis values also are shown in FIG. 17.1H-NMR (DMSO-d6, 298 K): delta (ppm) 1.75 (s, eta5-O5(CH3)5, 15H), 6.99 (d, d, J=2.2 Hz, J=2.7 Hz, 1H), 7.84 (d, d, J=8.4 Hz, J=1.5 Hz, 1H), 7.91 (d, J=8.4 Hz, 1H), 8.19 (d, J=1.5 Hz, 1H), 8.33 (d, J=2.2 Hz, 1H), 9.03 (d, J=2.7 Hz, 1H)Elementary analysis values: C20H23N2O3Ir: C, 45.18%; H, 4.36%; N, 5.27%Found: C, 44.90%; H, 4.30% N, 5.11%.
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