Catalyst system for suzuki cross-coupling reactions

A composition, comprising

• (i) a palladium compound which is selected from a palladium salt, a palladium complex or a mixture thereof;
• and
• (ii) a polycyclic compound of Formula (I), (II) or (III):
• wherein in Formula (I)
• n is 0 or 1,
• X is O, C(R10)(R11), or N(R12),
• R1 to R12 are selected independently from each other from hydrogen, an aryl group and a C1-10alkyl group, the aryl group and/or the C1-10alkyl group optionally being substituted with one or more substituents R13,
• wherein the one or more substituents R13, if present, are selected independently from each other from C1-6alkyl, C1-6haloalkyl, —OH, —O—(C1-6alkyl), —NO2, —CN, a halogen atom, —NH2, —NH(C1-6alkyl), —N(C1-6alkyl)2, —C(═O)OH, —C(═O)O—(C1-6alkyl), —C(═O)O-phenyl, —C(═O)(C1-6alkyl), —C(═O)-phenyl, —S(O)2NH2, —S(O)2NH(C1-6alkyl), —S(O)2N(C1-6alkyl)(C1-6alkyl), —S—(C1-6alkyl), —S(O)(C1-6alkyl), —S(O)2(C1-6alkyl), —S-(phenyl), —S(O)(phenyl), —S(O)2(phenyl), and a N-carbazolyl of Formula (1.1)
• wherein in Formula (II)
• R1 is selected from a C1-16alkyl group and an aryl group, the C1-16alkyl group and/or the aryl group optionally being substituted with one or more substituents R12, and/or the C1-16alkyl group optionally being interrupted by one or more oxygen atoms;
• R2 to R11 are selected independently from each other from hydrogen, a C1-16alkyl group, an aryl group, and a heteroaryl group;
• the C1-16alkyl group, the aryl group and/or the heteroaryl group optionally being substituted with one or more substituents R12, and/or the C1-16alkyl group optionally being interrupted by one or more oxygen atoms;
• or
• at least two of the residues R2 to R11 which are adjacent to each other form together with the carbon atoms to which they are attached a five- or six-membered aromatic ring while those of the residues R2 to R11 which do not form a ring are selected independently from each other from hydrogen, a C1-16alkyl group, an aryl group and a heteroaryl group;
• the C1-16alkyl group, the aryl group and/or the heteroaryl group optionally being substituted with one or more substituents R12, and/or the C1-16alkyl group optionally being interrupted by one or more oxygen atoms;
• wherein the one or more substituents R12, if present, are selected independently from each other from C1-6alkyl, C1-6haloalkyl, —OH, —O—(C1-6alkyl), —NO2, —CN, a halogen atom, —NH2, —NH(C1-6alkyl), —N(C1-6alkyl)2, —C(═O)OH, —C(═O)O—(C1-6alkyl), —C(═O)O-phenyl, —C(═O)(C1-6alkyl), —C(═O)-phenyl, —S(O)2NH2, —S(O)2NH(C1-6alkyl),
• wherein in Formula (III)
• R1 is selected from a C1-16alkyl group and an aryl group, the C1-16alkyl group and/or the aryl group optionally being substituted with one or more substituents R11, and/or the C1-16alkyl group optionally being interrupted by one or more oxygen atoms;
• R2 to R9 are selected independently from each other from hydrogen, a C1-16alkyl group and an aryl group, the C1-16alkyl group and/or the aryl group optionally being substituted with one or more substituents R11, and/or the C1-16alkyl group optionally being interrupted by one or more oxygen atoms;
• R10 is an aryl group which is optionally substituted with one or more substituents R12, wherein the one or more substituents R11, if present, are selected independently from each other from C1-6alkyl, C1-6haloalkyl, —OH, —O—(C1-6alkyl), —NO2, —CN, a halogen atom, —NH2, —NH(C1-6alkyl), —N(C1-6alkyl)2, —C(═O)OH, —C(═O)O—(C1-6alkyl), —C(═O)O-phenyl, —C(═O)(C1-6alkyl), —C(═O)-phenyl, —S(O)2NH2, —S(O)2NH(C1-6alkyl), —S(O)2N(C1-6alkyl)(C1-6alkyl), —S—(C1-6alkyl), —S(O)(C1-6alkyl), —S(O)2(C1-6alkyl), —S-(phenyl), —S(O)(phenyl), and —S(O)2(phenyl),
• wherein the one or more substituents R12, if present, are selected independently from each other from a C1-6alkyl group and an aryl group, wherein the aryl group is optionally substituted with one or more C1-6alkyl groups.