Synthetic building blocks for the production of materials for organic electroluminescence devices

1. A process for the preparation of a compound of the formula (34) or formula (35) or formula (36),

wherein

Nu stands for a nucleophilic group,

L is not present;

R is selected on each occurrence, identically or differently, from the group consisting of H, D, Cl, Br, I, NAr 2 , N(R 1 ) 2 , where R 1 is not equal to H, C(═O)Ar, C(═O)R 1 , BR 1 , P(═O)Ar 2 , PAr 2 , OAr, SAr, S(═O)Ar, S(═O) 2 Ar, Si(R 1 ) 3 , a straight-chain alkyl or alkoxy group having 1 to 40 C atoms or a branched or cyclic alkyl or alkoxy group having 3 to 40 C atoms or an alkenyl or alkynyl group having 2 to 40 C atoms, each of which may be substituted by one or more radicals R 1 , where in each case one or more non-adjacent CH 2 groups may be replaced by R 1 C═CR 1 , C≡C, Si(R 1 ) 2 , C═NR 1 , P(═O)(R 1 ), NR 1 , O, S or CONR 1 and where one or more H atoms may be replaced by D, F, Cl, Br or I, or an aromatic or heteroaromatic ring system having 5 to 60 aromatic ring atoms, which may in each case be substituted by one or more radicals R 1 ; two or more adjacent substituents R here may optionally form a monocyclic or polycyclic, aliphatic, aromatic or heteroaromatic ring system, which may be substituted by one or more radicals R 1 ;

Ar is on each occurrence, identically or differently, an aromatic or heteroaromatic ring system having 5-30 aromatic ring atoms, which may be substituted by one or more radicals R 1 ; two radicals Ar here which are bonded to the same N atom or P atom may also be bridged to one another by a single bond or a bridge selected from N(R 1 ), C(R 1 ) 2 , O, S or BR 1 ;

R 1 is selected on each occurrence, identically or differently, from the group consisting of H, D, F, Cl, Br, I, CN, NO 2 , N(R 2 ) 2 , P(═O)(R 2 ) 2 , a straight-chain alkyl, alkoxy or thioalkyl group having 1 to 40 C atoms or a branched or cyclic alkyl, alkoxy or thioalkyl group having 3 to 40 C atoms or an alkenyl or alkynyl group having 2 to 40 C atoms, each of which may be substituted by one or more radicals R 2 , where one or more non-adjacent CH 2 groups may be replaced by R 2 C═CR 2 , C≡C, Si(R 2 ) 2 , C═NR 2 , P(═O)(R 2 ), SO, SO 2 , NR 2 , O, S or CONR 2 and where one or more H atoms may be replaced by D, F, Cl, Br, I or CN, an aromatic or heteroaromatic ring system having 5 to 60 aromatic ring atoms, which may in each case be substituted by one or more radicals R 2 ; two or more adjacent substituents R 1 here may optionally form a monocyclic or polycyclic, aliphatic ring system, which may be substituted by one or more radicals R 2 ;

R 2 is selected on each occurrence, identically or differently, from the group consisting of H, D, F, CN, an aliphatic hydrocarbon radical having 1 to 20 C atoms, an aromatic or heteroaromatic ring system having 5 to 30 aromatic ring atoms, in which one or more H atoms may be replaced by D, F, Cl, Br, I or CN, where two or more adjacent substituents R 2 may form a mono- or polycyclic, aliphatic ring system with one another;

n is 0;

which comprises reacting a compound of the formula (1), or formula (2) or formula (3),

with a nucleophile.

2. The process according to claim 1 , wherein the compound of the formula (1), (2) or (3) is selected from the compounds of the formulae (1a) to (1e), (2a) to (2g),

where the symbols used has the meanings given in claim 1 .

3. The process according to claim 1 , wherein two adjacent radicals R form a ring of the formula (4) with one another,

where R 1 has the meanings given above, the dashed bonds indicate the linking of the group to the benzene skeleton and furthermore:

E is selected from the group consisting of C(R 1 ) 2 , NR 1 , O, S, BR 1 or Si(R 1 ) 2 .

4. The process according to claim 1 , wherein R is selected on each occurrence, identically or differently, from the group consisting of H, NAr 2 , C(═O)Ar, C(═O)R 1 , P(═O)Ar 2 , PAr 2 , Si(R 1 ) 3 , a straight-chain alkyl group having 1 to 10 C atoms or a branched or cyclic alkyl group having 3 to 10 C atoms or an alkenyl group having 2 to 10 C atoms, each of which may be substituted by one or more radicals R 1 , where in each case one or more non-adjacent CH 2 groups may be replaced by R 1 C═CR 1 or O and where one or more H atoms may be replaced by F, an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, which may in each case be substituted by one or more radicals R 1 ; two or more adjacent substituents R here may optionally form a monocyclic or polycyclic, aliphatic, aromatic or heteroaromatic ring system, which may be substituted by one or more radicals R 1 .

5. The process according to claim 1 , wherein none of the radicals R, R 1 or R 2 contains condensed aryl or heteroaryl groups in which six-membered rings are condensed directly onto one another.

6. The process according to claim 1 , wherein at least one radical R is selected from the group consisting of an aromatic or heteroaromatic ring system having 5 to 24 aromatic ring atoms, which may be substituted by one or more radicals R 1 .

7. The process according to claim 1 , wherein at least one radical R is selected from the group consisting of an aromatic or heteroaromatic ring system having 5 to 24 aromatic ring atoms, which may be substituted by one or more radicals R 1 , wherein R 1 is benzene, biphenyl, terphenyl, quaterphenyl, 1-, 2-, 3- or 4-spirobifluorene, 1-, 2-, 3- or 4-fluorene, 1- or 2-naphthyl, pyrrole, furan, thiophene, indole, benzofuran, benzothiophene, carbazole, azacarbazole, dibenzofuran, dibenzothiophene, pyridine, pyrimidine, pyrazine, pyridazine, triazine, imidazole, benzimidazole, pyrazole, thiazole, oxazole, oxadiazole, triazole, phenanthrene, triphenylene or combinations of two or three of these groups, each of which may be substituted by one or more radicals R 1 , or in that at least one substituent R is selected from one of the groups of the formulae (7) to (18)

where the symbols used have the meanings given in claim 1 , * indicates the position of the bonding of the group and furthermore:

A is on each occurrence, identically or differently, CR 1 or N, with the proviso that one, two or three groups A stand for N;

Ar 1 is, identically or differently on each occurrence, a divalent aromatic or heteroaromatic ring system having 5 to 16 aromatic ring atoms, which may be substituted by one or more radicals R 1 ;

m is 0 or 1.

8. The process according to claim 7 , wherein at least one radical R is selected from the group consisting of an aromatic or heteroaromatic ring system having 5 to 24 aromatic ring atoms, which may be substituted by one or more radicals R 1 , wherein R 1 is benzene, ortho-, meta- or para-biphenyl, ortho-, meta-, para- or branched terphenyl, ortho-, meta- para- or branched quaterphenyl, 1-, 2-, 3- or 4-spirobifluorene, 1-, 2-, 3- or 4-fluorene, 1- or 2-naphthyl, pyrrole, furan, thiophene, indole, benzofuran, benzothiophene, carbazole, azacarbazole, dibenzofuran, dibenzothiophene, pyridine, pyrimidine, pyrazine, pyridazine, triazine, imidazole, benzimidazole, pyrazole, thiazole, oxazole, oxadiazole, triazole, phenanthrene, triphenylene or combinations of two or three of these groups, each of which may be substituted by one or more radicals R 1 .

9. The process according to claim 1 , wherein at least one radical R is selected from the group consisting of triarylamine, carbazole, indenocarbazole, indolocarbazole, azacarbazole, indole, furan, benzofuran, dibenzofuran, thiophene, benzothiophene or dibenzothiophene, each of which may be substituted by one or more radicals R 1 , or at least one substituent R stands for NAr 2 , where the two groups Ar may also be bridged to one another by a group selected from NR 1 , O, S, C(R 1 ) 2 , Si(R 1 ) 2 or BR 1 .

10. The process according to claim 1 , wherein at least one radical R is selected from the groups of the formulae (19) to (33),

where the symbols used have the meanings given in claim 1 and furthermore:

G is selected from the group consisting of NR 1 , O or S;

where in each case one or two groups CR 1 may be replaced by N.

11. The process according to claim 1 , wherein the following compounds are excluded from the formulas (1′), (2′):