Dedicated to Prof. Barry M. Trost
C–Si bonds were constructed by utilizing copper hydride-catalyzed asymmetric hydrosilylation
of 1,2-dihydroquinolines, affording various chiral 4-silyl-1,2,3,4-tetrahydroquinolines
in good yields and enantioselectivity. In addition, the C–Si bonds were transformed
into C–O bonds with retention of stereochemistry through the Tamao oxidation, giving
a series of useful 4-hydroxy-1,2,3,4-tetrahydroquinolines. This method with the enantioselective
introduction of silyl groups provides an option to adjust bioactive properties of
tetrahydroquinolines.
Key words
1,2-dihydroquinoline - 1,2,3,4-tetrahydroquinoline - copper hydride - asymmetric catalysis
- hydrosilylation - dearomatization