“…Titanium enolates 1 , which are useful intermediates for carbon−carbon bond formation, can be generated from carbonyl compounds 2 by three methods (Scheme ): (i) transmetalation of lithium enolates 3 , which can be prepared from 2 , (ii) transmetalation of silyl enol ethers 4 , which can be prepared from 3 , and (iii) direct generation from 2 , when 2 are enolizable amides and carbonyl compounds . These three methods give formally identical titanium enolates 1 , but it is not yet clear if the reactivities of 1 depend on how they are generated.…”