2-Ferrocenyl-2-thiazoline as a building block of novel phosphine-free ligands
Por:
Corona-Sanchez, R, Toscano, RA, Ortega-Alfaro, MC, Sandoval-Chavez, C, Lopez-Cortes, JG
Publicada:
1 ene 2013
Categoría:
Inorganic Chemistry
Resumen:
New 1,2-disubstituted ferrocenes [5(b-j), in which R = -SMe, -SPh,
-SiPr, -SiMe3, -SePh, -SnBu3, -B(OH)(2), -Me, -I] with a thiazoline ring
in the ferrocene backbone using as key intermediate a ferrocenyl Fischer
carbene complex were synthesized. The capability of the 2-thiazoline
moiety as an ortho-directed metalation group was demonstrated by
subsequent quenching of lithium intermediate with several electrophiles,
proving to be an excellent method for synthesizing bidentate ligands.
The catalytic scope of the [N,S] ligand 5b as the corresponding
palladium complex 5b-PdCl2 in a microwave-promoted Heck reaction was
also tested. Results obtained showed better catalytic activity of
5b-PdCl2 compared to other catalytic systems based on a [N, S]
ferrocenyl ligand.
Filiaciones:
Corona-Sanchez, R:
Univ Nacl Autonoma Mexico, Inst Quim, Mexico City 04360, DF, Mexico
Toscano, RA:
Univ Nacl Autonoma Mexico, Inst Quim, Mexico City 04360, DF, Mexico
Ortega-Alfaro, MC:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04360, DF, Mexico
Sandoval-Chavez, C:
Univ Nacl Autonoma Mexico, Inst Quim, Mexico City 04360, DF, Mexico
Lopez-Cortes, JG:
Univ Nacl Autonoma Mexico, Inst Quim, Mexico City 04360, DF, Mexico
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