Kinetics and mechanism of (salen)MnIII–catalysed hydrogen peroxide oxidation of alkyl aryl sulphides

2007 ◽  
Vol 20 (4) ◽  
pp. 255-263 ◽  
Author(s):  
Arunachalam Chellamani ◽  
Nainamohamed Ismail Alhaji ◽  
Seenivasan Rajagopal
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetics And Mechanism ◽  
Peroxide Oxidation ◽  
Alkyl Aryl ◽  
Hydrogen Peroxide Oxidation

scholarly journals Aluminacyclopentanes in the synthesis of 3-substituted phospholanes and α,ω-bisphospholanes

2016 ◽  
Vol 12 ◽  
pp. 406-412 ◽  
Author(s):  
Vladimir A D’yakonov ◽  
Alevtina L Makhamatkhanova ◽  
Rina A Agliullina ◽  
Leisan K Dilmukhametova ◽  
Tat’yana V Tyumkina ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Molybdenum Hexacarbonyl ◽  
Peroxide Oxidation ◽  
One Pot ◽  
Alkyl Aryl ◽  
Hydrogen Peroxide Oxidation

An efficient one-pot process for the synthesis of 3-substituted phospholanes and α,ω-bisphospholanes was developed. The method involves the replacement of aluminium in aluminacyclopentanes, prepared in situ by catalytic cycloalumination of α-olefins and α,ω-diolefins, by phosphorus atoms on treatment with dichlorophosphines (R′PCl2). Hydrogen peroxide oxidation and treatment with S8 of the synthesized phospholanes and α,ω-bisphospholanes afforded the corresponding 3-alkyl(aryl)-1-alkyl(phenyl)phospholane 1-oxides, 3-alkyl(aryl)-1-alkyl(phenyl)phospholane 1-sulfides, bisphospholane 1,1'-dioxides, and bisphospholane 1,1'-disulfides in nearly quantitative yields. The complexes LMo(CO)5 (L = 3-hexyl-1-phenylphospholane, 3-benzyl-1-methylphospholane, 1,2-bis(1-phenylphospholan-3-yl)ethane, and 1,6-bis(1-phenylphospholan-3-yl)hexane were prepared by the reaction of 3-substituted phospholanes and α,ω-bisphospholanes with molybdenum hexacarbonyl. The structure of the complexes was proved by multinuclear 1H, 13C, and 31P spectroscopy.

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