Patent ID: 6982336

Claim:
A 1,2-dioxetane derivative of the formula (I): wherein each of R 1 and R 2 which are independent of each other, is a hydrogen atom, an alkyl group or an aryl group, or R 1 and R 2 may together form a cyclic or polycyclic organic ring group spiro-bonded to the dioxetane ring, R 3 is an alkyl group or an aryl group, or R 3 and R 1 or R 2 may together form a condensed ring containing the dioxetane ring and a hetero atom, and Ar is a group of the formula (A): wherein R 4 is a hydroxyl group, an alkoxyl group, an aralkyloxy group, a group of —OSi(R 5 R 6 R 7 ) (wherein each of R 5 , R 6 and R 7 which are independent of one another, is an alkyl group or an aryl group), a phosphate group or a group of —S(C═O)R 8 (wherein R 8 is an alkyl group or an aryl group), each of R 9 and R 10 which are independent of each other, is a hydrogen atom, an alkyl group, an aryl group or a halogen atom, X is a halogen atom, and V is an oxygen atom or a sulfur atom, or wherein Ar is a group of the formula (B): wherein R 4 is the same as R 4 in the above formula (A), each of R 11 and R 12 which are independent of each other, is a hydrogen atom, an alkyl group, an aryl group or a halogen atom, Y is a halogen atom, and W is an oxygen atom or a sulfur atom.