- A PhSeCl-mediated allylic oxidation of prenyl moiety: A convenient method for the construction of 3-isopenten-2-ol unit
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A phenylselenenyl chloride (PhSeCl)-mediated allylic oxidation to give allylically rearranged alcohol has been developed. A possible mechanism for the present reaction is generation of allylic selenide from prenyl moiety via [1,3]-sigmatropic rearrangement, followed by oxidation and [2,3]-sigmatropic rearrangement to afford 3-isopenten-2-ol.
- Oshida, Motoko,Nakamura, Tomoaki,Nakazaki, Atsuo,Kobayashi, Susumu
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p. 404 - 406
(2008/09/21)
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- Pd-catalyzed regioselective acylation of α,β-unsaturated ketone derivatives by acylzirconocene chloride as an acyl group donor
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Acylzirconocene chlorides reacted with α,β-unsaturated ketones (α,β-enone or -ynone) to give regioselectively 1,2- or 1,4-products under Pd-catalyzed conditions. In the reactions of α,β-enones, excellent regioselectivity was attained by the choice of the
- Hanzawa, Yuji,Tabuchi, Nobuhito,Narita, Kensuke,Kakuuchi, Akito,Yabe, Masaya,Taguchi, Takeo
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p. 7559 - 7571
(2007/10/03)
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- SELECTIVE GRIGNARD-TYPE CARBONYL ADDITION OF ALKENYL HALIDES MEDIATED BY CHROMIUM(II) CHLORIDE
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Alkenyl (or aryl) iodide (or bromide) is readily reduced with CrCl2 in N,N-dimethylformamide at 25oC to give the corresponding organochromium species which adds selectively to an aldehyde moiety without affecting the coexisting ketone or cyano group of the substrate.
- Takai, Kazuhiko,Kimura, Keizo,Kuroda, Tooru,Hiyama, Tamejiro,Nozaki, Hitosi
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p. 5281 - 5284
(2007/10/02)
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