Shape-selective olefin epoxidation catalyzed by manganese picnic basket porphyrins

NMR Assignments and Conformational Studies of NewC′3-Cyclotriveratrylenes with Pendant Thiol Substituents

“…In a recent paper,4 we reported the synthesis of the two new C,-cyclotriveratrylenes, 1 and 2 (Scheme l), bearing three pendant arms each ended by a thiol group, together with the X-ray analysis of 1.…”

Linker-dependent chromogenic control of the emission of polymethylene-vaulted trans-bis(salicylaldiminato)platinum(II) complexes

“…The effects of the linkers in a series of vaulted porphyrin [38,39] and cyclidene [40] metal complexes on the stoichiometric reactivity during the incorporation of molecular oxygen [39,40] and on the catalytic activity for the epoxidation of olefins with PhIO [38] have been investigated; since both phenomena are greatly affected by the size-selective inclusion of substrates in the reaction cavities of the vaulted complexes, which exhibit varying capacities. In addition, both the UV-vis absorbance wavelengths and Raman frequencies of vaulted porphyrin iron complexes are reportedly altered by varying the linker length, depending on the associated strain induced in the coordination planes [41].…”

Strong Induced‐Fit Binding of Viologen and Pyridine Derivatives in Adjustable Porphyrin Cavities

“…[2][3][4][5][6][7][8][9][10][11][12] We have previously reported on the synthesis and guest binding properties of so-called 'porphyrin clips', cavity molecules based on diphenylglycoluril that are capped with a porphyrin roof (H22, H23). [13] Insertion of a manganese center in the porphyrin plane of H22 to give Mn2 turned the host molecule into a catalyst for the epoxidation of alkenes.…”