SEARCH Articles Figures Tables Acetals chiral Acetates addition Addition reactions acetalizations Additions acetal Chiral Ketenes Chiral acetals diastereoselective Chiral acetate Chiral additives Chirality diastereoselectivity Diastereoselective addition Diastereoselective reaction Diastereoselective reactions Diastereoselectivity Diastereoselectivity reaction Keten acetal Ketene acetal Ketene acetals, addition Ketene reaction Ketenes acetals Ketenes addition Ketenes reactions Ketenes silyl acetals Reactions chiral Silyl acetate Silyl ketene acetals Silyl ketene acetals, chiral diastereoselectivity Silyl ketene acetals, reaction Silyl ketenes Silyl ketenes, reactions Silylation reactions