Reaction Kinetics and Catalysis Letters, Vol.87, No.2, 281-289, 2006
New chiral catalysts: Synthesis and fragmentation pattern of C9-O-silanized cinchonidines
We synthesized C9-O-silyl ethers of cinchonidine and dihydrocinchonidine (1-8), seven of which have not been known before. The structures of the compounds were verified by ESI-ion-trap MS and H-1-NMR. Fragmentation of silyl ethers containing Si-phenyl bonds was studied for the first time. The compounds obtained will be utilized as chiral catalysts of certain asymmetric syntheses.