Patent ID: 7589210

Claim:
A compound of the general formula: in which R1 represents a phenyl, a (C1-C18) aryl, a (C1-C18) alkyl, R2 represents an atom of hydrogen, of deuterium, a phenyl group, a (C1-C18) aryl, (C1-C18) alkyl, or a radical Z1 of formula in which A1 is a single bond, a methylene group, or an oxymethylene group, where the oxygen atom is bound to the phosphorus atom of the radical Z1, X represents an atom of oxygen or of sulfur, Y represents an atom of oxygen and R represents an atom of hydrogen, a (C1-C18) alkyl or a (C6-C18) aryl, Y represents a methylene group and R represents an atom of hydrogen, a (C1-C17) alkyl, a (C6-C18) aryl, or a radical Z3 of formula in which R represents an atom of hydrogen, a (C1-C17) alkyl, a (C6-C18) aryl group R3 and R5 represent, independently, an atom of hydrogen, of deuterium, a phenyl, (C1-C18) aryl, an (C1-C18) alkyl group, R4 represents a radical of formula in which X is a (C1-C18) alkyl or (C6-C18) aryl, A2 is an atom of oxygen, of nitrogen, or of carbon and Z is a positively charged group and selected from a triaryl phosphonium —P + (Ar) 3 , Ar being a (C6-C18) aryl group, guanidinium —NH—C(═NH)NH 3 + , ammonium —N + (R) 3 , sulfonium S + (R) 2 , in which R is a group chosen from among the (C1-C18) alkyl and (C6-C18) aryl groups, substituted or not, saturated or not, possibly containing at least one atom of oxygen, nitrogen, and sulfur, R6 is an atom of hydrogen, of deuterium, a phenyl, (C1-C18) aryl, (C1-C18) alkyl group, a radical Z2 of formula in which A2 is a single bond, a methylene group, an oxymethylene group, where the oxygen atom is bound to the phosphorus atom of the radical Z2, X represents an atom of oxygen or of sulfur, Y represents an atom of oxygen and R represents an atom of hydrogen, a (C1-C18) alkyl, a (C6-C18) aryl, Y represents a methylene group and R represents an atom of hydrogen, a (C1-C17) alkyl, (C6-C18) aryl, and R7 represents an atom of hydrogen, of deuterium, a methyl group.