Composition, method of authenticating, methods of making authenticatable compositions, authenticatable articles made there from

A process for preparing a composition, wherein said process comprises:

• A. reacting a compound of formula II;
• wherein R1 is at least one of —O— or —NR6—, wherein R6 is a monovalent organic group;
• R2 is selected from the group consisting of an aromatic radical having 3 to 30 carbon atoms, and a cycloaliphatic radical having 3 to 12 carbon atoms;
• R4 and R5 are either:
• (i) independently at each occurrence selected from the group consisting of an aliphatic radical having 1 to 12 carbon atoms, an aromatic radical having 3 to 20 carbon atoms, a cycloaliphatic radical having 3 to 12 carbon atoms, a cyano group, a nitro group, a halo group, and a —OR9 group, wherein R9 is selected from the group consisting of hydrogen, an aliphatic radical having 1 to 12 carbon atoms, an aromatic radical having 3 to 20 carbon atoms, and a cycloaliphatic radical having 3 to 12 carbon atoms;
• or
• (ii) together represent an aromatic radical having 3 to 12 carbon atoms;
• B. with a compound of formula III;
• X—R3 III
• wherein R3, is a labile moiety with the proviso that R3 is not a group selected from the group consisting of —CH2—(CH2)n—CH3 and —CH2—C6H5 wherein n has a value 0, 1 or 2 and X is a leaving group;
• C. in presence of a base and a solvent to form a compound of formula I,
• wherein R1 is at least one of —O— or —NR6—, wherein R6 is a monovalent organic group;
• R2 is selected from the group consisting of an aromatic radical having 3 to 30 carbon atoms, and a cycloaliphatic radical having 3 to 12 carbon atoms;
• R3 is a labile moiety with the proviso that R3 is not a group selected from the group consisting of —CH2—(CH2)n—CH3 and —CH2—C6H5 wherein n has a value 0, 1 or 2;
• and
• R4 and R5 are either:
• (i) independently at each occurrence selected from the group consisting of an aliphatic radical having 1 to 12 carbon atoms, an aromatic radical having 3 to 20 carbon atoms, a cycloaliphatic radical having 3 to 12 carbon atoms, a cyano group, a nitro group, a halo group, and a —OR9 group, wherein R9 is selected from the group consisting of hydrogen, an aliphatic radical having 1 to 12 carbon atoms, an aromatic radical having 3 to 20 carbon atoms, and a cycloaliphatic radical having 3 to 12 carbon atoms;
• or
• (ii) together represent an aromatic radical having 3 to 12 carbon atoms.

An authentication method, which method comprises:

• a. subjecting an article comprising an authentication compound to a deblocking stimulus to obtain an at least partially deblocked authentication compound;
• b. subjecting the article comprising the at least partially deblocked authentication compound to an excitation stimulus;
• and
• c. measuring a response from the article.