Highly Regio- and Chemoselective Ring Opening of Oxa-Bridged Piperidinones Toward Functionalized Furanones and Piperidines.
نویسندگان
چکیده
منابع مشابه
Highly regio-, chemo- and diastereoselective synthesis of oxa-bridged spirocycles: a novel observation of reverse selectivity.
The reverse regio- and diastereoselectivities are observed between the reactions involving 5- and 6-membered-ring cyclic carbonyl ylide dipoles with alpha-methylene ketones. A mild catalytic route to synthesize spirocyclic systems with high regio-, chemo- and diastereoselectivities is described.
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A series of 3(2H)-furanones, based on side-chain modifications of a parent 3(2H)-furanone, was synthesized in good yield. The parent compound was prepared by hydrogenolysis, and subsequent acid hydrolysis, of isoxazole derivatives. The isoxazole was prepared by a [3+2] 1,3-dipolar cycloaddition reaction between 3-butyn-2-ol and nitrile oxide.
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Highly fluorinated epoxides were polymerized under mild conditions regioregularly, which gave easy access to isotactic polymers by using optically pure epoxides.
متن کاملMulticomponent preparation of highly functionalized piperidines using FeCl3.6H2O as an efficient catalyst
FeCl3.6H2O was used as an efficient catalyst for the synthesis of highly functionalized piperidines via a one-pot five-component reaction of aromatic amines, aromatic aldehydes and β-keto esters in EtOH at room temperature. The remarkable advantages offered by this method are good yields, simple procedure, short reaction times, no need to column chromatography and easy work-up. The structures o...
متن کاملMulticomponent preparation of highly functionalized piperidines using FeCl3.6H2O as an efficient catalyst
FeCl3.6H2O was used as an efficient catalyst for the synthesis of highly functionalized piperidines via a one-pot five-component reaction of aromatic amines, aromatic aldehydes and β-keto esters in EtOH at room temperature. The remarkable advantages offered by this method are good yields, simple procedure, short reaction times, no need to column chromatography and easy work-up. The structures o...
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ژورنال
عنوان ژورنال: ChemInform
سال: 2007
ISSN: 0931-7597,1522-2667
DOI: 10.1002/chin.200709040