Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... In the presence of a catalytic amount of bismuth trichloride (5 mol%), silyl enol ethers react with aldehydes at room temperature to give the corresponding aldols in good yields. ... In the presence of 5 mol % BiCl 3 , silyl enol ethers react with aldehydes at room temperature to give the ...