Good isomerization of 2-cyclohexenol by two Ru(II) complexes, synthesis and characterization of a reaction intermediate
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2018-06-22Abstract
The catalytic activities of [RuClCp(PTA)2] (1) and [RuCp(PTA)2
(H2O-κO)]OTf (2) were assessed for the redox isomerization of the
cyclic allylic alcohol 2-cyclohexenol into cyclohexanone in water
and biphasic media. Complex 2 showed unprecedented good
TONs for the studied conversion both in water (TON = 647) and in
the biphase of cyclohexene/H2O (TON = 3420) while 1 showed a
lower but also good activity (water TON = 95, biphasic TON = 100).
The catalytic reaction intermediate [RuCp(PTA)2(η2-C6H9OH)]
CF3SO3 (3) was synthesized and characterized using NMR.