Synthesis of maleic and pHthalic anhydrides from the mixture of cyclopentene and 1-pentene

2000 ◽  
Vol 17 (3) ◽  
pp. 357-364 ◽  
Author(s):  
Young Ho Kim ◽  
Hyun Soo Yang
Keyword(s):  
Phthalic Anhydrides

On the regioselectivity of the condensation of stabilized phosphoylids with 3-substituted phthalic anhydrides

1989 ◽  
Vol 67 (4) ◽  
pp. 569-573 ◽  
Author(s):  
Livain Breau ◽  
Margaret M. Kayser
Keyword(s):  
Oxygen Atom ◽  
Transition State ◽  
Carbonyl Group ◽  
Lewis Base ◽  
Carbonyl Function ◽  
Deficient Phosphorus ◽  
Phthalic Anhydrides

Condensations of stabilized phosphorane 1 with 3-substituted phthalic anhydrides were investigated. The importance of various effects influencing regio- and stereoselectivity of these reactions is discussed. It is proposed that the oxygen atom on the substituents in position 3 can act as a Lewis base toward the electron-deficient phosphorus of the ylid. The resulting complexation stabilizes the transition state for the reaction at the ortho carbonyl group, thus offsetting the usual steric and "push" effects, which favour attack at the meta carbonyl function. Keywords: Wittig condensations, phthalic anhydrides, regioselectivity, stereoselectivity.

Influence of the oxidation state of vanadium on the reactivity of V/P/O, catalyst for the oxidation of n-pentane to maleic and phthalic anhydrides

2006 ◽  
Vol 244 (1-2) ◽  
pp. 244-251 ◽  
Author(s):  
G. Bignardi ◽  
F. Cavani ◽  
C. Cortelli ◽  
T. De Lucia ◽  
F. Pierelli ◽  
...  
Keyword(s):  
Oxidation State ◽  
Phthalic Anhydrides

ChemInform Abstract: An Easy One-Step Synthesis of Imidazolin-2-ones from Phthalic Anhydrides and Their Antioxidant Evaluation.

ChemInform ◽  
2016 ◽  
Vol 47 (24) ◽  
Author(s):  
Hector S. Lopez ◽  
Jose E. Enciso ◽  
Adrian Ochoa-Teran ◽  
Juan I. Velazquez ◽  
Juan I. Sarmiento
Keyword(s):  
Antioxidant Evaluation ◽  
One Step ◽  
Phthalic Anhydrides
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