Dual role of Cu₂O nanocubes as templates and networking catalysts for hollow and microporous Fe-porphyrin networks

Abstract

CuO nanocubes were used for the synthesis of hollow and microporous Fe porphyrin networks (H-MFePN). In this synthesis, CuO nanocubes performed not only as networking catalysts but also as shape controlling templates. MFePN were formed on the surface of the CuO nanocubes through azide-alkyne cycloaddition of tetrakis(4-ethynylphenyl) Fe-porphyrin with 1,4-diazidobenzene. H-MFePN showed excellent catalytic activities in carbene insertion into N-H bonds, maintaining their activities during five recycle tests.

Carbene Transfer Reactions Catalysed by Dyes of the Metalloporphyrin Group

“…After acidic treatment, hollow microporous iron porphyrin networks were obtained, which showed excellent catalytic activity in carbene insertion into N-H bonds with EDA, maintaining its activity during five cycles. The molar ratio between the single N-H insertion product and the double N-H insertion product for primary amines was as high as 100:0 for 4-nitroaniline, whereas for 4-methoxyaniline, 4-methylaniline, aniline, 4-bromoaniline, and 4-cyanoaniline this ratio was 81:19, 90:10, 93:7, 98:2, and 99:1, respectively ( Scheme 34 ) [ 92 ].…”

Recent Advances in Iron‐Catalyzed Chemical and Enzymatic Carbene‐Transfer Reactions

“…Again in 2017, they explored the N−H carbene insertion reactions with hollow and microporous iron porphyrin catalytic networks prepared by azide‐alkyne cycloaddition reaction of 1,4‐diazidobenzene with Fe(III)‐tetrakis(4‐ethylphenyl)porphyrin chloride on the Cu 2 O nanotubes surface [45] . The newly developed catalytic system showed excellent activity and selectivity for single N−H carbene reaction with a broad range of amines and was recoverable up to five successive cycles without losing the catalytic efficiency.…”

Azides and Porphyrinoids: Synthetic Approaches and Applications. Part 1—Azides, Porphyrins and Corroles

“…The iron(III) complex of 5,10,15,20-tetrakis(4-ethynylphenyl)porphyrin (P1-Fe) was used by Son and co-workers to prepare hollow microporous porphyrinic-based organic networks [18]. The authors used Cu 2 O nanocubes as templates and networking catalysts, and a click-chemistry approach.…”

“…The Cu 2 O core was removed by acid treatment and the Fe(III) porphyrin network linked by bis-triazolylbenzene bridges (Scheme 1) was obtained. The Fe(III) porphyrin-based organic network (FePON) prepared was explored as a catalyst for carbene insertion into N-H bonds; the obtained results revealed excellent catalytic activity, selectivity and recyclability [18].…”