SEARCH Articles Figures Tables Acetal selective Acetic selectivity Acetyl acetate Acetyl anhydride Acetylations amines, acetic anhydride Amine selection Amines acetals Amines acetates Amines acetic anhydride Amines acetylation Amines anhydrides Anhydrides acetylation Secondary amines selective acetylations, acetic anhydride Selective acetylation Selective acetylations acetic anhydride