Selective Synthesis of Imines by Photo-Oxidative Amine Cross-Condensation Catalyzed by PCN-222(Pd)

Abstract

Palladium-metalated PCN-222 enables the aerobic photo-oxidative cross-condensation of anilines with benzylic amines yielding a series of linear and cyclic imines. The reaction is very efficient under mild conditions, which allows the isolation of simple, yet elusive, intermediates such as 2-(benzylideneamino)­aniline and 2-(benzylideneamino)­phenols. Recyclability studies show excellent activity and selectivity after five runs. The methodology was successfully applied for the synthesis of an antitumor agent (PMX-610).

A semi-encapsulated PdRh alloy heterojunction for the selective catalytic hydrogenation of nitrophenylacetylene to nitrostyrene

“…S1b †). 19,20 On comparing with Fig. S1b, † Pd-Rh@PC (0.25 Pd) still maintains the rod-like structure after carbonization.…”

Metalloporphyrin-Based Metal–Organic Frameworks for the Ultrasensitive Chemiresistive Detection of NO2: Effect of the Central Metal on Tuning the Sensing Performance

“…The FT-IR spectra of PCN-222-M and MTCPP were further obtained to investigate the compositions of the prepared samples . As illustrated in Figure E,F, in comparison with MTCPP, all of the PCN-222-M exhibited an absence of characteristic peaks around 1690 cm –1 (CO bonds) and 1268 cm –1 (C–O bonds), whereas a strong peak appears at 1420 cm –1 (COO symmetric stretch bond), reflecting the coordination of the carboxyl group to the Zr 6 cluster in PCN-222-M and further demonstrating the successful preparation of PCN-222-M .…”

“…33,39,40 The FT-IR spectra of PCN-222-M and MTCPP were further obtained to investigate the compositions of the prepared samples. 41 As illustrated in Figure 2E,F, in comparison with MTCPP, all of the PCN-222-M exhibited an absence of characteristic peaks around 1690 cm −1 (C�O bonds) and 1268 cm −1 (C−O bonds), whereas a strong peak appears at 1420 cm −1 (COO symmetric stretch bond), reflecting the coordination of the carboxyl group to the Zr 6 cluster in PCN-222-M and further demonstrating the successful preparation of PCN-222-M. 42 In addition, taking PCN-222-Cu as an example (Figure S1), the characteristic peak of Cu−N slightly shifted to 1004 cm −1 relative to that of CuTCPP (1001 cm −1 ). 43 This further indicated that CuTCPP in PCN-222-Cu possessed reduced intermolecular interactions and quasi-molecular properties, resulting in the exposure of much more active sites for gas adsorption, consistent with the above results of UV−vis spectra and UV−vis DRS.…”

Magnetite dopamine‐decorated copper (Fe3O4@PDA/CuCl2): A robust and reusable catalyst for promoting green synthesis of benzimidazoles and benzothiazoles

“…The present copper‐based catalytic system exhibited remarkable activity in oxidative cross‐connection reactions and can be easily recycled (Scheme 1). 20b,23b,29 …”