Combinatorial Design of Copper-Based Mixed Nanoclusters: New Catalysts for Suzuki Cross-Coupling
作者:Mehul B. Thathagar、Jurriaan Beckers、Gadi Rothenberg
DOI:10.1002/adsc.200303045
日期:2003.8
Quantum dots (2–5 nm) of copper and copper/palladium mixtures are found to be good catalysts for Suzukicross-coupling. The catalysts are applicable to a wide range of iodo- and bromoaryl substrates, and give moderate yields using chloroaryl substrates. Cluster activity and stability is found to depend strongly on the preparation method and the reaction conditions. The mechanism of cluster deactivation
The invention relates to compounds of formula
wherein the substituents R1, R2 and R4 have the meaning as set forth and explained in the description of the invention, to processes for the preparation of these compounds, pharmaceutical compositions containing same, the use thereof optionally in combination with one or more other pharmaceutically active compounds for the therapy of a disease which responds to an inhibition of protein kinase activity, especially a neoplastic disease, in particular leukaemia, and a method for the treatment of such a disease.
The invention relates to compounds of formula
wherein the substituents R1, R2 and R4 have the meaning as set forth and explained in the description of the invention, to processes for the preparation of these compounds, pharmaceutical compositions containing same, the use thereof optionally in combination with one or more other pharmaceutically active compounds for the therapy of a disease which responds to an inhibition of protein kinase activity, especially a neoplastic disease, in particular leukaemia, and a method for the treatment of such a disease.