161814-11-5Relevant articles and documents
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Stork,G.,Guthikonda,R.N.
, p. 2755 - 2758 (1972)
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Chiral Lewis Acid-Catalyzed Asymmetric Diels-Alder Reactions of (E)-1-Phenylsulfonyl-3-alken-2-ones with Cyclopentadiene
Wada, Eiji,Pei, Wen,Kanemasa, Shuji
, p. 2345 - 2348 (1994)
Highly enantio- and endo-selective Diels-Alder reactions of (E)-1-phenylsulfonyl-3-alken-2-ones, a new type of chelating dienophile, with cyclopentadiene are achieved by the aid of a catalytic amount of chiral titanium catalysts.Mode of enantioselectiviti
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
experimental part, 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
Enantioselective transformation of alpha,beta-unsaturated ketones using chiral organic catalysts
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Page/Page column 12; 14, (2008/06/13)
Nonmetallic organic catalysts are provided that facilitate the enantioselective reaction of α,β-unsaturated ketones. The catalysts are chiral imidazolidinone compounds having the structure of formula (IIA) or (IIB) or are acid addition salts thereof, wherein, in one preferred embodiment, R1 is C1-C6 alkyl, R2is phenyl or 2-methylfuryl, R3 and R4 are hydrogen, and R5 is phenyl optionally substituted with 1 or 2 substituents selected from the group consisting of halo, hydroxyl, and C1-C6 alkyl The chiral imidazolidinones are useful in catalyzing a wide variety of reactions, including cycloaddition reactions, Friedel-Crafts alkylation reactions, and Michael additions.