4608-41-7Relevant academic research and scientific papers
Regioselective silver-mediated Kondakov-Darzens olefin acylation
Barczak, Nicholas T.,Jarvo, Elizabeth R.
, p. 12912 - 12916 (2011/12/04)
Enone construction: A silver-mediated olefin acylation reaction is described, in which five-, six-, and -seven-membered rings, tetrasubstituted olefins, bridged bicycles, spirocycles, and benzoxepinones are prepared. Highly selective intermolecular reactions are coupled to a Nazarov cyclization for the effective preparation of cyclopentenones, including the core of modhephene (see scheme). Copyright
A new highly asymmetric chelation-controlled heck arylation
Nilsson, Peter,Larhed, Mats,Hallberg, Anders
, p. 3430 - 3431 (2007/10/03)
This communication describes the development of a new highly asymmetric chelation-controlled Heck arylation. The methodology permits formation of 2-aryl-2-methyl cyclopentanones in good to very good two-step yields (45-78%) with excellent chiral enrichmen
THE SYNTHESIS VIA ORGANOIRON COMPLEXES OF PEDICELLANIN METHYL ETHER AND CUPARENE
Bovicelli, P,Mincione, E.
, p. 2037 - 2050 (2007/10/02)
A synthetic route to Pedicellanin methyl ether as well as to Cuparene via iron tricarbonyl-cyclohexadienyl cations is reported.The unusual aromatization reaction of the iron tricarbonyl- cyclohexadienyl mojety by iron trichloride is evidencied.
Use of the Ketal Claisen Rearrangement for the Synthesis of Cyclic Sesquiterpenes Containing Quaternary Centers. A Formal Synthesis of Cuparene.
Schuda, Paul Francis,Potlock, Steven J.,Ziffer, Herman
, p. 463 - 468 (2007/10/02)
We have shown that the ketal based Claisen rearrangement can be useful for generating vicinal quaternary and tertiary-quaternary centers by suitable substitution on the reacting 2-cyclohexenols and cycloalkanone ketal.A rapid and efficient method for preparing hindered cycloalkanone ketals in very pure form is presented, as well as a useful modification for synthesizing the requied 2-cyclohexenols from alkyl anisoles with a minimum number of undesired side products.
Synthesis of α-Cuparenone
Anand, R. C.,Ranjan, H.
, p. 1054 - 1057 (2007/10/02)
Ethyl 2-carbethoxy-3-p-tolylpropanoate (VII) on Michael reaction with acrolein followed by acetal formation furnishes acetal-malonate (IX).The diacid (X), obtained by hydrolysis of IX, is warmed with lead tetraacetate-pyridine mixture, and the resulting p
Direct Geminal Dimethylation of Ketones using Dimethyltitanium Dichloride
Reetz, Manfred T.,Westermann, Juergen,Steinbach, Rainer
, p. 237 - 239 (2007/10/02)
Ketones are readily converted into the corresponding geminal dimethyl derivatives on reaction with dimethyltitanium dichloride under mild conditions; tertiary alcohols react similarly.
