Zobrazeno 1 - 10
of 14
pro vyhledávání: '"R. Rabanedo Clemente"'
Publikováno v:
Synlett. 2008:3208-3212
A new radical clock based on pinene derivatives has been designed to measure the radical cyclization rate onto cyano and carbonyl groups and the radical elimination rate of OR and CN. In this system, the known rate constant of cyclobutylcarbinyl radi
Autor:
L. Mateos Buron, Alfonso Fernández-Mateos, P. Herrero Teijón, R. Rubio Gonzalez, R. Rabanedo Clemente
Publikováno v:
The Journal of Organic Chemistry. 72:9973-9982
The reactions of a series of epoxynitriles and epoxyketones induced by titanocene chloride have been studied. The kinetics of the decyanogenation of beta,gamma-epoxynitriles with Ti(III) corresponds to a radical reaction (k25 approximately 106 s-1),
Autor:
F. Sanz González, Alfonso Fernández-Mateos, R. Rubio Gonzalez, P. Herrero Teijón, R. Rabanedo Clemente
Publikováno v:
Synlett. 2007:2718-2722
Radical cascade cyclizations of unsaturated epoxynitriles induced by titanocene chloride proceed in good yields and with excellent diastereoselectivities. From three to seven stereocenters were created by the reaction and a single isomeric product wa
Publikováno v:
Tetrahedron Letters. 47:7755-7758
The reductive radical cyclizations of several epoxy esters have been achieved using titanocene chloride. The tether length from the initial radical to the carbonyl acceptor is the key of the reactions. We obtained products from radical cyclization on
Autor:
Monique S. J. Simmonds, R. Rubio Gonzalez, R. Rabanedo Clemente, E. M. Martin de la Nava, Alfonso Fernández-Mateos
Publikováno v:
Tetrahedron. 61:12264-12274
A diastereoselective synthesis of the model insect antifeedant 29 a CDE molecular fragment of 12-ketoepoxyazadiradione has been achieved in ten steps from indenone 9 in 44% overall yield. Several of the compounds obtained along the synthesis related
Effect of Tether Length on Ti(III)-Mediated Cyclization of Epoxyalkenes and Unsaturated Epoxyketones
Autor:
F. Sanz González, R. Rubio Gonzalez, E. M. Martin de la Nava, R. Rabanedo Clemente, L. Mateo Buron, A. Fernandez‐Mateo
Publikováno v:
Synlett. 2004:2553-2557
The chemo- and regioselectivity of the radical cyclization induced by titanocene chloride of a series of epoxyalkenes and another of unsaturated epoxyketones are investigated. 5-Exo and 6-exo cyclizations are the main processes with epoxyalkenes. 3-E
Autor:
L. Mateos Buron, R. Rubio Gonzalez, Alfonso Fernández-Mateos, R. Rabanedo Clemente, Ana I. Ramos Silvo
Publikováno v:
Synlett. :1011-1014
The reductive radical cyclization of β-, γ-, δ- and e-epoxynitriles has been achieved using titanocene chloride. The reaction was regioselective and afforded cyclic β-hydroxyketones in good yield. The catalytic version of this radical cyclization
Autor:
Alfonso Fernández-Mateos, R. Rabanedo Clemente, S. Encinas Madrazo, F. Sanz González, R. Rubio Gonzalez, P. Herrero Teijón
Publikováno v:
The Journal of organic chemistry. 78(19)
A practical, short, and diastereoselective synthesis of the azadiradione BCDE fragment from a readily available starting material is described. The key step was the titanocene(III)-promoted tandem cyclization of unsaturated epoxy nitrile.
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