Acid-catalyzed Diels-Alder reaction

Lewis acids catalyze Diels-Alder reactions. Do they enhance overlap between diene and dienophile orbitals and/ or do they reduce the HOMO/LUMO energy difference ... [Pg.275]

The Chiral Lewis Acid-catalyzed Diels-Alder Reaction 7... [Pg.7]

The Chiral Lewis Acid-catalyzed Diels-Alder Reaction 9 Fig. 1.1 CAB catalyst 3 and methacrolein Me... [Pg.9]

Lewis-Acid-Catalyzed Diels-Alder Reaction... [Pg.99]

This chapter will mostly deal with the applications of the Lewis-acid-catalyzed Diels Alder reaction to organic synthesis and the influence of Lewis acids on reactivity, stereoselectivity and regioselectivity of the cycloadditions. [Pg.100]

Lewis-acid-catalyzed Diels-Alder reaction of 3-phenylthio-2- quinolinones with silox-ydiene. Synthesis of the intermediate for dynemicin A core [97]... [Pg.131]

Highly selective Lewis-acid-catalyzed Diels-Alder reactions of acyclic (Z)-1,3-dienes [104]... [Pg.133]

BR0NSTED-ACID-CATALYZED DIELS-ALDER REACTION... [Pg.185]

Bronsted-acid-catalyzed Diels-Alder reactions are not frequent because of the proton sensitivity of many dienes and cycloadducts, especially when long reaction times and high temperatures are required. Examples in aqueous medium involving imines activated by protonation as dienophiles and a proton-promoted Diels-Alder reaction of glyoxylic acid with cyclopentadiene are considered in Section 6.1. [Pg.185]

Fringuelli F., Piermatti O., Pizzo F., Vaccaro L. Recent Advances in Lewis-Acid Catalyzed Diels-Alder Reactions in Aqneons Media Eur. J. Org. Chem. 2001... [Pg.301]

Keywords Lewls-acid catalyzed Diels-Alder reactions, reactions In water... [Pg.313]

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