25304-14-7Relevant articles and documents
Preparation method of herbac spice
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Paragraph 0024-0032, (2019/06/30)
The invention discloses a green preparation method of herbac spice. The method includes direct dehydrogenation of an alicyclic alcohol precursor under the action of a heterogeneous dehydrogenation catalyst to produce herbac spice.
Optically active ester compounds and their use in perfume compositions
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Page/Page column 7-8, (2009/07/25)
Optically active ester compounds of the formula: in particular, are useful fragrance materials.
Optically Active Ester Compounds and their use in Perfume Compositions
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Page/Page column 7-8, (2009/12/05)
Optically active ester compounds of the formula: in particular, are useful fragrance materials.
[4+2] Cyclohexane ring formation by a tandem of a free radical alkylation of a non-activated δ-carbon atom and intramolecular carbanion cycloalkylation
Petrovic, Goran,Cekovic, Zivorad
, p. 1671 - 1679 (2007/10/03)
A [4+2] cyclohexane ring formation was achieved by the combination of free radical and ionic reaction sequences. Free radical alkylation of the remote non-activated δ-carbon atom involves addition of δ-carbon radicals, generated by 1,5-hydrogen transfer in alkoxyl radical intermediates, to the radicophilic olefins, while the polar sequence involves the enolate anions as intermediates which undergo a cycloalkylation reaction. The cyclohexane rings were constructed using diverse acyclic compounds 15 and 18 as well as cyclic alkyl arenesulfenates (e.g., 5, 24, 27) as the precursors of alkoxyl radicals (four-carbon atom fragment) and methyl vinyl ketone or other activated olefins as two-carbon atom fragments. Annulation of the cyclohexane ring was applied for the synthesis of a variety of cyclic systems including monocyclic (17 and 20), fused-rings (e.g. 23, 26, 29) and spirocyclic systems (7).
Annulation of the Cyclohexane Ring by Tandem Free Radical Alkylation of a Nonactivated δ-carbon Atom-Intramolecular Carbanion Cycloalkylation
Petrovic, Goran,Cekovic, Zivorad
, p. 3769 - 3772 (2007/10/03)
formula presented Annulation of the cyclohexane ring by a combination of free radical and ionic reactions sequences was achieved. Free radical alkylation of the remote nonactivated δ-carbon atom involves addition of δ-carbon radicals, generated by 1,5-hydrogen transfer in alkoxy radical intermediates, to radicophilic olefins, while the polar sequence involves enolate anions as intermediates which undergo a cycloalkylation reaction. Thus, the cyclohexane ring was constructed using diverse acyclic and cyclic structures as precursors of alkoxy radicals.
Friedel-Crafts Reactions of Some Vinyisilanes
Fleming, Ian,Pearce, Andrew
, p. 2485 - 2489 (2007/10/02)
Substituted cyclohexenylsilanes (2), (5), (9), and (13) undergo Friedel-Crafts reactions to give substitution products, site-selectively at the carbon atom carrying the trimethylsilyl group. β-Trimethylsilylstyrene (17) similary gives more substitution in Friedel-Crafts reactions with benzoyl chloride and with phenylacetyl chloride than styrene itself.The syntheses of the silanes are reported, and some limitations of the idea identified.
Malodor counteractants
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, (2008/06/13)
The compounds represented by the structural formula STR1 wherein A, B and C each independently represent hydrogen or lower alkyl having from 1 to 4 carbon atoms, provided that the sum of the carbon atoms in A, B and C is no more than 5, R1 represents alkyl having from 1 to 4 carbons, have been found to be particularly useful in compositions and methods for counteracting malodors. Novel compounds are also disclosed.