Phosphane Sulfide/Octacarbonyldicobalt-Catalyzed Pauson - Khand Reaction Under an Atmospheric Pressure of Carbon Monoxide.
Convenient access to cyclopentenones is provided by catalytic intra- and intermolecular Pauson - Khand reactions in the presence of octacarbonyldicobalt and tributylphosphane sulfide (see scheme). In contrast to other reactions of this type, they proceed under mild conditions (70 degrees C, 1 atm CO), and commercially available [Co(2)(CO)(8)] can be used without further purification.
Hayashi
M
Department of Chemistry and Biotechnology Graduate School of Engineering, The University of Tokyo Hongo, Tokyo 113-8656 (Japan).
Hashimoto
Y
Yamamoto
Y
Usuki
J
Saigo
K