Asymmetric synthesis of secondary alcohols from primary alcohols via intramolecular carbenoid C-H insertion catalyzed by rhodium(II) 3-phenylcholestane-2-carboxylate.
Chiral secondary alcohols may be prepared from primary alcohols via asymmetric C-H insertion reactions of alpha'-alkoxy-alpha-diazoketones catalyzed by rhodium(II)(2R,3R)-3-phenylcholestane-2-carboxylate.