Abstract: A description is given of processes for the preparation of mono- and bisacylphosphines and of mono- and bisacylphosphine oxides and mono- and bisacylphosphine sulfides, which comprises first reacting organic P-monohalogenophosphines or P,P-dihalogenophosphines, or mixtures thereof, with an alkali metal or magnesium in combination with lithium, where appropriate in the presence of a catalyst, and then carrying out the reaction with acid halides and, in the case of the process for the preparation of oxides, carrying out an oxidation step and, in the case of the preparation of sulfides, reacting the phosphines so obtained with sulfur. It is characteristic, inter alia, that the processes are carried out without isolation of the intermediates.

Abstract: The invention relates to dimer and multimer form of BAPO compounds of the formula (I) dimer and multimer forms of MAPO compounds of the formula (II) wherein R1, R2, and R3 independently of one another are unsubstituted or substituted C1–C12alkyl, benzyl, C1–C12alkoxy, C3–C6cycloalkyl or C5–C14aryl; Q is a di- tri or tetravalent arylene residue; n is 1–4, m is 0–2, n+m is 2, 3 or 4, with the proviso, that R1 and R3 are different from each other.

Abstract: Compounds of formula (I), wherein A is S or O; x is 0 or 1; a is SR10 or N(R11)(R12); R1 and R2 are C1–C24alkyl, OR10, CF3 or halogen; R3, R4 and R5 are hydrogen, C1–C24alkyl, OR10 or halogen; or two of the radicals R11 R21 R31 R4 and/or R9 together form C1–C2oalkylene uninterrupted or interrupted by O, S or NR13; R6, R11 R8 and R9 are hydrogen, C1–C24alkyl; C2–C24alkyl which is interrupted one or more times by non-consecutive O atoms and unsubstituted or substituted by OH and/or SH, or R6, R7, R8 and Rg are OR10; halogen; or phenyl unsubstituted or substituted one or more times by C-Calkyl; R10, R11 and R12 are e.g. hydrogen; X is e.g.

Abstract: Compounds of the formula (I), in which E is O or S; and x is 0 or 1, A is cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl or an O-, S- or N-containing 5- or 6-membered heterocyclic ring, where the mentioned radicals are unsubstituted or substituted by halogen, C1–C4alkyl or C1–C4alkoxy; or A is a group formula (II) R is C1–C24alkyl, unsubstituted or substituted, C2–C24alkyl which is interrupted once or more than once by nonconsecutive O, S or NR14 and which is unsubstituted or substituted, C2–C24alkenyl which is uninterrupted or interrupted once or more than once by nonconsecutive O, S or NR14 and which is unsubstituted or substituted, C5–C24cycloalkenyl which is uninterrupted or interrupted once or more than once by nonconsecutive O, S or NR14 and which is unsubstituted or substituted; C7–C24arylalkyl which is unsubstituted or substituted on the aryl group.

Abstract: A description is given of processes for the preparation of mono- and bisacylphosphines and of mono- and bisacylphosphine oxides and mono- and bisacylphosphine sulfides, which comprises first reacting organic P-monohalogenophosphines or P,P-dihalogenophosphines, or mixtures thereof, with an alkali metal or magnesium in combination with lithium, where appropriate in the presence of a catalyst, and then carrying out the reaction with acid halides and, in the case of the process for the preparation of oxides, carrying out an oxidation step and, in the case of the preparation of sulfides, reacting the phosphines so obtained with sulfur. It is characteristic, inter alia, that the processes are carried out without isolation of the intermediates.

Abstract: A description is given of processes for the preparation of mono- and bisacylphosphines and of mono- and bisacylphosphine oxides and mono- and bisacylphosphine sulfides, which comprises first reacting organic P-monohalogenophosphines or P,P-dihalogenophosphines, or mixtures thereof, with an alkali metal or magnesium in combination with lithium, where appropriate in the presence of a catalyst, and then carrying out the reaction with add halides and, in the case of the process for the preparation of oxides, carrying out an oxidation step and, in the case of the preparation of sulfides, reacting the phosphines so obtained with sulfur. It is characteristic, inter alia, that the processes are carried out without isolation of the intermediates.

Abstract: Compounds of the formula I in which Ar is a group or unsubstituted or substituted cyclopentyl, cyclohexyl, naphthyl, biphenylyl or an O-, S- or N-containing 5- or 6-membered heterocyclic ring; R1 and R2 are C1-C20alkyl, OR11, CF3 or halogen; R3, R4 and R5 are hydrogen, C1-C20alkyl, OR11 or halogen; R6 is unsubstituted or substituted C1-C24alkyl, C2-C24alkyl, which is interrupted by O, S or NR14 and is unsubstituted or substituted; C2-C24alkenyl, uninterrupted or interrupted by O, S or NR14 and unsubstituted or substituted; unsubstituted or substituted C7-C24arylalkyl; C4-C24cycloalkyl, uninterrupted or interrupted by O, S and/or NR14; or C8-C24arylcycloalkyl; R11 is C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl, interrupted by O or S and unsubstituted or substituted; R12 and R13 are hydrogen, C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl, interrupted by O atoms and unsubstituted or substituted; or R12 and R13 together are C3-C5alkylene, uninterrupted or interrupted by O,

Abstract: Compounds of the formula I (I), in which Ar is a group or unsubstituted or substituted cyclopentyl, cyclohexyl, naphthyl, biphenylyl or an O-, S- or N-containing 5- or 6-membered heterocyclic ring; R1 and R2 are C1-C20alkyl, OR11, CF3 or halogen; R3, R4 and R5 are hydrogen, C1-C20alkyl, OR11 or halogen; R6 is unsubstituted or substituted C1-C24alkyl, C2-C24alkyl, which is interrupted by O, S or NR14 and is unsubstituted or substituted; C2-C24alkenyl, uninterrupted or interrupted by O, S or NR14 and unsubstituted or substituted; unsubstituted or substituted C7-C24arylalkyl; C4-C24cycloalkyl, uninterrupted or interrupted by O, S and/or NR14; or C8-C24arylcycloalkyl; R11 is C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl, interrupted by O or S and unsubstituted or substituted; R12 and R13 are hydrogen, C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl, interrupted by O atoms and unsubstituted or substituted; or R12 and R13 together are C3-C5alkylene, uninterrupted or interrupted by

Abstract: The invention relates to dimer and multimer form of BAPO compounds of the formula (I) dimer and multimer forms of MAPO compounds of the formula (II) wherein R1, R2, and R3 independently of one another are unsubstituted or substituted C1-C12alkyl, benzyl, C1-C12alkoxy, C3-C6cycloalkyl or C5-C14aryl; Q is a di-tri or tetravalent arylene residue; n is 1-4, m is 0-2, n+m is 2, 3 or 4, with the proviso, that R1 and R3 are different from each other.

Abstract: A description is given of processes for the preparation of mono- and bisacylphosphines and of mono- and bisacylphosphine oxides and mono- and bisacylphosphine sulfides, which comprises first reacting organic P-monohalogenophosphines or P,P-dihalogenophosphines, or mixtures thereof, with an alkali metal or magnesium in combination with lithium, where appropriate in the presence of a catalyst, and then carrying out the reaction with acid halides and, in the case of the process for the preparation of oxides, carrying out an oxidation step and, in the case of the preparation of sulfides, reacting the phosphines so obtained with sulfur. It is characteristic, inter alia, that the processes are carried out without isolation of the intermediates.

Abstract: Compounds of the formula (I), in which E is O or S; and x is 0 or 1, A is cyclopentyl, cyclohexyl, naphthyl, biphenylyl, anthracyl or an O—,S— or N-containing 5- or 6-membered heterocyclic ring, where the mentioned radicals are unsubstituted or substittuded by halogen, C1-C4alkyl or C1-C4alkoxy; or A is a group formula (II) R is C1-C24alkyl, unsubstituted or substituted, C2-C24alkyl which is interrupted once or more than once by nonconsecutive O, S or NR14 and which is unsubstituted or substituted, C2-C24alkenyl which is uninterrupted or interrupted once or more than once by nonconsecutive O, S or NR14 and which is unsubstituted or substituted, C5-C24cycloalkenyl which is uninterrupted or interrupted once or more than once by nonconsecutive O, S or NR14 and which is unsubstituted or substituted: C7-C24arylalkyl which is unsubstituted or substituted on the aryl group.

Abstract: A description is given of processes for the preparation of mono- and bisacylphosphines and of mono- and bisacylphosphine oxides and mono- and bisacylphosphine sulfides, which comprises first reacting organic P-monohalogenophosphines or P,P-dihalogenophosphines, or mixtures thereof, with an alkali metal or magnesium in combination with lithium, where appropriate in the presence of a catalyst, and then carrying out the reaction with acid halides and, in the case of the process for the preparation of oxides, carrying out an oxidation step and, in the case of the preparation of sulfides, reacting the phosphines so obtained with sulfur. It is characteristic, Inter alia, that the processes are carried out without isolation of the intermediates.

Abstract: Compounds of formula (I), wherein A is S or O; x is 0 or 1; a is SR10 or N(R11)(R12); R1 and R2 are C1-C24alkyl, OR10, CF3 or halogen; R3, R4 and R5 are hydrogen, C1-C24alkyl, OR10 or halogen; or two of the radicals R11 R21 R31 R4 and/or R9 together form C1-C2oalkylene uninterrupted or interrupted by O, S or NR13; R6, R11 R8 and R9 are hydrogen, C1-C24alkyl; C2-C24alkyl which is interrupted one or more times by non-consecutive O atoms and unsubstituted or substituted by OH and/or SH, or R6, R7, R8 and Rg are OR10; halogen; or phenyl unsubstituted or substituted one or more times by C-Calkyl; R10, R11 and R12 are e.g. hydrogen; X is e.g. (II), and R2; have one of the meanings given for R1 and R2; and R3′, R4′ and Rs′ have one of the meanings given for R3, R4 and R5; are suitable as photoinitiators, especially for irradiation with light of relatively long wavelengths.

Abstract: Compounds of the formula I Ar is a group or unsubstituted or substituted cyclopentyl, cyclohexyl, naphthyl, biphenylyl or an O-, S- or N-containing 5- or 6-membered heterocyclic ring; R1 and R2 are C1-C20alkyl, OR11, CF3 or halogen; R3, R4 and R5 are hydrogen, C1-C20alkyl, OR11 or halogen; R6 is unsubstituted or substituted C1-C24alkyl, C2-C24alkyl, which is interrupted by O, S or NR14 and is unsubstituted or substituted; C2-C24alkenyl, uninterrupted or interrupted by O, S or NR14 and unsubstituted or substituted; unsubstituted or substituted C7-C24arylalkyl; C4-C24cycloalkyl, uninterrupted or interrupted by O, S and/or NR14; or C8-C24arylcycloalkyl; R11 is C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl, interrupted by O or S and unsubstituted or substituted; R12 and R13 are hydrogen, C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl, interrupted by O atoms and unsubstituted or substituted; or R12 and R13 together are C3-C5alkylene, uninterrupted or i

Abstract: Compounds of the formula I 1

Abstract: Compounds of the formula I 1

Abstract: Compounds of the formula I R1 and R2 independently of one another are C1-C20alkyl, OR11, CF3 or halogen; R3, R4 and R5 independently of one another are hydrogen, C1-C20alkyl, OR11 or halogen; R6, R7, R8, R9 and R10 independently of one another are hydrogen, C1-C20alkyl; C2-C20alkyl which is interrupted once or more than once by nonconsecutive O atoms and which is unsubstituted or substituted by OH and/or SH; or R6, R7, R8, R9 and R10 are OR11, SR11, N(R12)(R13), phenyl or halogen; R11 is C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl which is interrupted once or more than once by O or S and which is unsubstituted or substituted by OH and/or SH; R12 and R13 independently of one another are hydrogen, C114 C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl which is interrupted once or more than once by nonconsecutive O atoms and which is unsubstituted or substituted by OH and/or SH; or R12 and R13 together are C3-C5alkylene which can be interrupted by O, S or NR14; R14 is hyd

Abstract: Compounds of the formula I 1

Abstract: Compounds of the formula I R1 and R2 independently of one another are C1-C20alkyl, OR11, CF3 or halogen; R3, R4 and R5 independently of one another are hydrogen, C1-C20alkyl, OR1 or halogen; R6, R7, R8, R9 and R10 independently of one another are hydrogen, C1-C20alkyl; C2-C20alkyl which is interrupted once or more than once by nonconsecutive O atoms and which is unsubstituted or substituted by OH and/or SH; or R6, R7, R8, R9 and R10 are OR11, SR11, N(R12)(R13), phenyl or halogen; R11 is C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl which is interrupted once or more than once by O or S and which is unsubstituted or substituted by OH and/or SH; R12 and R13 independently of one another are hydrogen, C1-C20alkyl, C3-C8cycloalkyl, phenyl, benzyl or C2-C20alkyl which is interrupted once or more than once by nonconsecutive O atoms and which is unsubstituted or substituted by OH and/or SH; or R12 and R13 together are C3-C5alkylene which can be interrupted by O, S or NR14; R14 is hydrog

Abstract: Compounds of the formula I 1