D-Camphor-derived triazolium salts for catalytic intramolecular crossed aldehyde-ketone benzoin reactions.
A series of triazolium salts has been synthesized from d-camphor and found to be efficient catalysts for intramolecular crossed aldehyde-ketone benzoin reactions, affording alpha-ketols bearing a quaternary carbon center with up to 93% ee.
Li
Yi
Y
State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, PR China.
Feng
Zhen
Z
You
Shu-Li
SL