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