Nitrileoxide compound

A compound of the formula (I):

• wherein:
• A is R4O—, R4—NR5—, (R4O)2—P(═O)—, R4S—, R6(R7)s, N, O, S, or —NR5—;
• R2 and R3 are each independently a hydrogen atom, an aryl group, a tert-alkyl group, or a sec-alkyl group, which may have one or more substituents, and at least one of R2 and R3 is an aryl group, a tert-alkyl group, or a sec-alkyl group, which may have one or more substituents;
• s is an integer of 1-10,
• when A is R4O—, R4—NR5—, or (R4O)2—P(═O)—, then s is 1,
• R4 is R13—(R14)i—R15—
• R13 is a hydrogen atom, a halogen atom, or a methyl group which may be substituted by a halogen atom,
• R14 is each independently at each occurrence an oxygen atom, an alkylene group, a cycloalkylene group, a heterocycloalkylene group, an arylene group, a heteroarylene group, a divalent polyalkylether group or a divalent siloxane group,
• when A is R4O—, R15 is an alkylene group having 2-3 carbon atoms optionally substituted by one or more substituents, wherein the substituent of alkylene is selected from the group consisting of an oxygen atom;
• a halogen atom;
• a hydroxyl group;
• an unsubstituted, mono-substituted or di-substituted amino group;
• a nitro group;
• an azide group;
• a C1-16 alkyl group, a C3-16 cycloalkyl group, a C3-16 cycloalkenyl group, a C6-16 heterocycloalkyl group, a C6-16 heterocycloalkenyl group, a C6-16 aryl group, a C6-16 heteroaryl group, a C1-16 alkoxy group, a C6-16 aryloxy, a C1-16 alkylthio or a C1-20 (poly)alkyl ether group which may be substituted by one or more halogen atoms;
• —O—C(O)—ORa, —O—C(O)—NRa2, —C(O)—Ra, —C(O)—ORa, —NRa—C(O)—Ra, —NRa—C(NRa)—Ra, —C(NRa)—Ra or —C(NRa)—NRa2, wherein Ra represents each independently a hydrogen atom, a C1-16 alkyl group, a C2-16 alkenyl group, a C2-16 alkynyl group, a C3-16 cycloalkyl group, a C3-16 cycloalkenyl group, a C6-16 heterocycloalkyl group, a C6-16 heterocycloalkenyl group, a C6-16 aryl group or a C6-16 heteroaryl group,
• when A is R4—NR5— or (R4O)2—P(═O)—, R15 is an alkylene group optionally substituted by one or more substituents, wherein the substituent of alkylene is selected from the group consisting of an oxygen atom;
• a halogen atom;
• a hydroxyl group;
• an unsubstituted, mono-substituted or di-substituted amino group;
• a nitro group;
• an azide group;
• a C1-16 alkyl group, a C2-16 alkynyl group, a C3-16 cycloalkyl group, a C3-16 cycloalkenyl group, a C6-16 heterocycloalkyl group, a C6-16 heterocycloalkenyl group, a C6-16 aryl group, a C6-16 heteroaryl group, a C1-16 alkoxy group, a C6-16 aryloxy, a C1-16 alkylthio or a C1-20 (poly)alkyl ether group which may be substituted by one or more halogen atoms;
• —O—C(O)—ORa, —O—C(O)—NRa2, —C(O)—Ra, —C(O)—ORa, —NRa—C(O)—Ra, —NRa—C(NRa)—Ra, —C(NRa)—Ra or —C(NRa)—NRa2, wherein Ra represents each independently a hydrogen atom, a C1-16 alkyl group, a C2-16 alkenyl group, a C2-16 alkynyl group, a C3-16 cycloalkyl group, a C3-16 cycloalkenyl group, a C6-16 heterocycloalkyl group, a C6-16 heterocycloalkenyl group, a C6-16 aryl group or a C6-16 heteroaryl group,
• l is an integer of 0-5,
• R5 is each independently a hydrogen atom or a hydrocarbon group;
• when A is R4S—, then s is 1,
• R4 is R13—(R14)l—R15—,
• R13 is a hydrogen atom, a halogen atom, or a methyl group which may be substituted by a halogen atom,
• R14 is each independently at each occurrence an oxygen atom, an alkylene group having 1-20 carbon atoms, a cycloalkylene group, a heterocycloalkylene group, an arylene group, a heteroarylene group, a divalent polyalkylether group or a divalent siloxane group,
• R15 is an alkylene group having 3 carbon atoms,
• l is an integer of 0-5;
• when A is R6(R7)s, then s is an integer of 2-10,
• R6 is an s-valent organic group,
• R7 is each independently —O—, —S—, —NR5— or —O—P(═O)OR4′—,
• R4′ is each independently a hydrocarbon group,
• R5 is each independently a hydrogen atom or a hydrocarbon group;
• when A is N, then s is 3, and
• when A is O, S or —NR5—, then s is 2, and R5 is a hydrogen atom or a hydrocarbon group.