201409-73-6Relevant academic research and scientific papers
Copper(II)-bis(oxazoline) catalyzed asymmetric Diels-Alder reaction with α′-arylsulfonyl enones as dienophiles
Barroso, Santiago,Blay, Gonzalo,Al-Midfa, Lina,Munoz, M. Carmen,Pedro, Jose R.
, p. 6389 - 6392 (2008/12/21)
(Chemical Equation Presented) α′-Arylsulfonyl enones are efficient bidentate dienophiles for the Cu(II)-bis(oxazoline) catalyzed enantioselective Diels-Alder reaction with a number of dienes, affording the corresponding products with good to high enantiomeric excesses. The resulting products can be alkylated and the sulfone removed, so α′- arylsulfonyl enones can be regarded as surrogates of simple monodentate enones, which are poor dienophiles with this catalytic system.
Asymmetric diels-alder reactions of sulfonyl-functionalized α,β-unsaturated ketones with cyclopentadiene catalyzed by chiral lewis acid
Pei, Wen,Wang, Yu-Guang,Wang, Yong-Jiang,Sun, Li
scheme or table, p. 3383 - 3388 (2009/05/07)
Asymmetric Diels-Alder reactions of (E)-1-substituted sulfonyl-3-penten-2- ones with cyclopentadiene catalyzed by a chiral titanium reagent were investigated. The enantioselectivity was studied with different substituents in the position of sulfonyl moiet
