Synthesis and catalytic reactivity of sterically and electronically modified D4-symmetric metallotetraarylporphyrins
摘要:
Two new sterically-modified and two electronically-modified D-4-symmetrical tetraarylporphyrin ligands have been prepared and the catalytic activity of their manganese complexes in epoxidations of aryl-substituted alkenes studied. Moderate reactivity changes were observed in catalytic epoxdiations with these electronically varied tetraaarylporphyrin complexes, the methoxy derivative giving slightly improved selectivity (83% e.e. with cis-beta-methylstyrene). (C) 1997 Elsevier Science Ltd.
Synthesis and catalytic reactivity of sterically and electronically modified D4-symmetric metallotetraarylporphyrins
摘要:
Two new sterically-modified and two electronically-modified D-4-symmetrical tetraarylporphyrin ligands have been prepared and the catalytic activity of their manganese complexes in epoxidations of aryl-substituted alkenes studied. Moderate reactivity changes were observed in catalytic epoxdiations with these electronically varied tetraaarylporphyrin complexes, the methoxy derivative giving slightly improved selectivity (83% e.e. with cis-beta-methylstyrene). (C) 1997 Elsevier Science Ltd.