منابع مشابه
The Diels-Alder Reaction: an Update
In this update on the Diels-Alder reaction we would like to present an overview on how this very important reaction has progressed in the last decade, since the last spate of monographs and reviews appeared in the literature, and which deal with the reaction in the overall sense. Initially we present the Diels-Alder reaction in a generalised form, much as discovered over seventy years ago, so t...
متن کاملAsymmetric Catalysis of Diels–Alder Reaction
The Diels–Alder (DA) reaction (or diene synthesis) between a diene and a dienophile generates two s bonds stereoselectively and up to four chiral centers in a single step to afford six-membered cyclic compounds. This cycloaddition reaction named after Professor Otto Paul Hermann Diels (1876–1954) and his student Kurt Alder (1902–1958) was discovered in 1928 during studies on the reaction of b...
متن کاملAqueous Ti(IV)-catalyzed Diels-Alder reaction.
The aqueous Diels-Alder reaction of 1,3-cyclohexadiene with 1,4-benzoquinone was compared and contrasted to the same reaction catalyzed with Flextyl P, a novel Ti(IV) performance catalyst. The catalyst improved conversion by 22% versus the uncatalyzed reaction and represents a rare example of a Ti(IV) catalyzed Diels-Alder reaction in water.
متن کاملDiels-Alder Reaction in the Presence of Zeolite
Rate acceleration and selectivity enhancement of organic reactions such as Diels-Alder or Ene reac tions using water [1] as a solvent or clay supported reagents [2 ] have recently attracted much interest. The underlaying reason for their influence on the reaction rates and selectivity, has been ascribed to hydrophobic association of the reactants, as in the case of water, or the presence of wa...
متن کاملUnsaturated aldehydes as alkene equivalents in the Diels-Alder reaction.
A one-pot procedure is described for using alpha,beta-unsaturated aldehydes as olefin equivalents in the Diels-Alder reaction. The method combines the normal electron demand cycloaddition with aldehyde dienophiles and the rhodium-catalyzed decarbonylation of aldehydes to afford cyclohexenes with no electron-withdrawing substituents. In this way, the aldehyde group serves as a traceless control ...
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ژورنال
عنوان ژورنال: Seibutsu Butsuri
سال: 2004
ISSN: 0582-4052,1347-4219
DOI: 10.2142/biophys.44.s20_3