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Regioselective Cycloaddition (regioselective + cycloaddition)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Regioselective Cycloaddition of 3-Azatrienes with Enamines.

CHEMINFORM, Issue 47 2006
-Aminoacids., Synthesis of Pyridines Derived from
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Regioselective Cycloaddition of Cyclic Ketones to Acyl(imidoyl)ketenes.

CHEMINFORM, Issue 37 2003
N. Yu.
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

Reactivity and Selectivity of Captodative Olefins as Dienes in Hetero -Diels,Alder Reactions

HELVETICA CHIMICA ACTA, Issue 10 2008
Rubén Sanabria
Abstract The reactivity and selectivity of the the captodative olefins 1-acylvinyl benzoates 1a,1f and 3a as heterodienes in hetero -Diels,Alder reactions in the presence of electron-rich dienophiles is described. Heterodienes 1 undergo regioselective cycloaddition with the alkyl vinyl etherdienophiles 6a,b and 9 to give the corresponding dihydro-2H -pyrans 7, 8, and 10 under thermal conditions. The reactivity of these cycloadditions depends, to a large extent, on the electronic demand of the substituent in the aroyloxy group of the heterodiene. Frontier-molecular-orbital (FMO; ab initio) and density-functional-theory (DFT) calculations of the ground and transition states account for the reactivity and regioselectivity observed in these processes. [source]

Synthesis of spiro[3,4-diaryl-4,5-dihydroisoxazole-5,2,-1,,2,,3,,4-tetrahydro-1,-naphthalenone]

HETEROATOM CHEMISTRY, Issue 6 2001
Santhanaraman Manikandan
Synthesis of a series of novel spiro[3,4-diaryl-4,5-dihydroisoxazole-5,2,-1,,2,,3,,4,-tetrahydro-1,-naphthalenone] has been described by the regioselective cycloaddition of nitrile oxides with 2-arylmethylene-1,2,3,4-tetrahydro-1-naphthalenone. © 2001 John Wiley & Sons, Inc. Heteroatom Chem 12:463,467, 2001 [source]