Efficient catalytic epoxidation of alkenes by a manganese porphyrin and periodate in the presence of imidazole

1993 ◽  
pp. 240 ◽  
Author(s):  
Daryoush Mohajer ◽  
Shahram Tangestaninejad
Keyword(s):  
Manganese Porphyrin ◽  
Catalytic Epoxidation ◽  
Epoxidation Of Alkenes

Catalytic epoxidation of cis-stilbene and naphthalene by tetra-n-butylammonium hydrogen monopersulfate in the presence of manganese(III) tetraarylporphyrins and various anionic co-catalysts

2012 ◽  
Vol 16 (01) ◽  
pp. 149-153 ◽  
Author(s):  
Zahra Solati ◽  
Majid Hashemi ◽  
Ahmad Keshavarzi ◽  
Ezzat Rafiee
Keyword(s):  
High Yield ◽  
Manganese Porphyrin ◽  
Co Catalysts ◽  
Catalytic Epoxidation ◽  
Epoxidation Reaction

The epoxidation of cis-stilbene by n-Bu4NHSO5 was studied in the presence of two different manganese porphyrin complexes, [MnTPFPP(Cl) and MnTPP(Cl)], and various n-Bu4NX (X = OAc, F, Cl, Br, OCN, NO3, BF4). In general direct correlation was found between stereoselectivity of the epoxidation reaction and the nucleophilic properties of these anionic co-catalysts. Also epoxidation of naphthalene was carried out in high yield and good selectivity by n-Bu4NHSO5 in the presence of MnTPFPP(Cl) in association with n-Bu4NOAc or n-Bu4NF co-catalysts.

A manganese porphyrin–α-cyclodextrin conjugate as an artificial enzyme for the catalytic epoxidation of polybutadiene

2018 ◽  
Vol 54 (44) ◽  
pp. 5586-5589 ◽  
Author(s):  
Qi-Wei Zhang ◽  
Johannes A. A. W. Elemans ◽  
Paul B. White ◽  
Roeland J. M. Nolte
Keyword(s):  
Artificial Enzyme ◽  
Manganese Porphyrin ◽  
Catalytic Epoxidation

A manganese porphyrin–α-cyclodextrin conjugate was designed as an artificial clamp-like enzyme to catalyze the epoxidation of cis-polybutadiene with trans-epoxide preference.

New Organocatalysts for the Asymmetric Catalytic Epoxidation of Alkenes Mediated by Chiral Iminium Salts

Synlett ◽  
2002 ◽  
Vol 2002 (04) ◽  
pp. 0580-0582 ◽  
Author(s):  
Philip C. Bulman Page ◽  
Gerasimos A. Rassias ◽  
David Barros ◽  
Adel Ardakani ◽  
Donald Bethell ◽  
...  
Keyword(s):  
Asymmetric Catalytic ◽  
Iminium Salts ◽  
Catalytic Epoxidation ◽  
Epoxidation Of Alkenes
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