cas 105-24-8, 1-(2-CYCLOPENTENYL)-2-PROPANONE

Articles about 105-24-8Total 7 be found

Stereoselective synthesis of ptilocaulin and its 7-epimer
A versatile stereoselective synthesis of ptilocaulin 1 and its 7-epimer 22, involving formation of the B-ring by intramolecular nitrile oxide cyclization, is described.
Hassner, Alfred,Murthy, K.S.Keshava
p. 1407 - 1410
(1986)
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Fragrant mixtures containing esters and ketones
The invention relates to fragrant mixtures comprising at least one compound of general formula (I), a method for producing claimed fragrant mixtures, particularly perfume oils, perfumed products containing the claimed fragrant mixture, and the use of the compound of general formula (I) to strengthen the natural freshness and/or emanation and/or to mask or reduce greasy and/or metallic notes of one or more fragrant substances that differ from the compound of formula (I).
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(2021/01/25)

Mechanistic origin of the stereodivergence in decarboxylative allylation
A stereochemical test has been used to probe the mechanism of decarboxylative allylation. This probe suggests that the mechanism of DcA reactions can change based on the substitution pattern at the α-carbon of the nucleophile; however, reaction via stabilized malonate nucleophiles is the lower energy pathway. Lastly, this mechanistic proposal has predictive power and can be used to explain chemoselectivities in decarboxylative reactions that were previously confounding.
Chattopadhyay, Kalicharan,Jana, Ranjan,Day, Victor W.,Douglas, Justin T.,Tunge, Jon A.
supporting information; experimental part
p. 3042 - 3045
(2010/08/20)

Asymmetric allylic alkylation of ketone enolates: An asymmetric claisen surrogate
(Chemical Equation Presented) The combination of catalytic palladium(0) and Trost ligand provides an effective catalyst for the rearrangement of allyl β-ketoesters. The mechanism of the transformation involves formation of π-allyl palladium intermediates which undergo enantioselective attack by ketone enolates. Decarboxylation of β-ketocarboxylates allows regiospecific generation of enolates under extremely mild conditions.
Burger, Erin C.,Tunge, Jon A.
p. 4113 - 4115
(2007/10/03)

A convergent construction of quaternary centres and polycyclic structures
Various xanthates, made by conjugate addition of xanthic acid to electrophilic olefins, add in a inter- or intra-molecular fashion to olefins allowing a direct introduction of a quaternary centres and the construction of polycyclic structures.
Binot, Gre?gori,Quiclet-Sire, Be?atrice,Saleh, Twana,Zard, Samir Z.
p. 382 - 386
(2007/10/03)

Ketone-directed peracid epoxidation of cyclic alkenes
Ketone carbonyl groups are shown to direct the peracid epoxidation of cyclic alkenes with greater selectivity than that displayed by esters. An 18O labelling study is used to show that a dioxirane intermediate is not involved in these reactions.
Armstrong, Alan,Barsanti, Paul A.,Clarke, Paul A.,Wood, Anthony
p. 1373 - 1380
(2007/10/03)

Iminyl, Amidyl, and Carbamyl Radicals from O-Benzoyl Oximes and O-Benzoyl Hydroxamic Acid Derivatives.
Oxime benzoates and O-benzoyl hydroxamic acid derivatives react with tributylstannane in the presence of AIBN to give iminyl, amidyl, and carbamyl radicals which can be captured by an internal olefin.
Boivin, Jean,Callier-Dublanchet, Anne-Claude,Quiclet-Sire, Beatrice,Schiano, Anne-Marie,Zard, Samir Z.
p. 6517 - 6528
(2007/10/02)