139031-06-4Relevant academic research and scientific papers
A VERSATILE PROCESS FOR THE PREPARATION OF ACYLPHOSPHINES
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Page/Page column 26, (2018/04/13)
The present invention relates to a versatile, highly efficient process for the preparation of acylphosphines such as mono- and bisacylphosphines via reaction of phosphines (PH3 and higher homologues) or silylated phosphines with acylhalides in the presence of at least one lewis acid. The invention further relates to novel acyl phosphines obtainable by said process.
SYNTHESIS OF BIS(ACYL)PHOSPHINES BY ACTIVATION OF UNREACTIVE METAL PHOSPHIDES
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Page/Page column 43, (2019/01/04)
The present invention refers to a process for the preparation of a mono(acyl)phosphine of the general formula (I) and/or a bis(acyl)phosphine of the general formula (II), wherein R1, R2, R3, R4 and R5 are the same or different and are independently selected from H, halogen, linear or branched C1-C20-alkyl, linear or branched C2-C8-alkenyl, C1-C8-alkoxy, C2-C8-alkenyloxy, C3-C8-cycloalkyl, C6-C12-aryl, C3-C8-cycloalkoxy, C7-C12-arylalkoxy, C9-C15-alkenylarylalkoxy, nitro-, C6-C12-arylsulfonyl, 4-alkylarylsulfonyl, C1-C20-alkylcarboxy, C1-C8-alkoxycarbonyl, SR14, NHR14 or NR14R15 with R14 and R15 being independently selected from H, linear or branched C1-C20-alkyl, linear or branched C2-C8-alkenyl and C3-C8-cycloalkyl, and an O-, S-or N-containing 5-or 6-membered heterocyclic ring; R6 is H or R6 is replaced by an alkaline earth metal cation or a mixed alkali metal/alkaline earth metal cation; Formula (II) wherein R1, R2, R3, R4, R5, R7, R8, R9, R10 and R11 are the same or different and are independently selected from H, halogen, linear or branched C1-C20-alkyl, linear or branched C2-C8-alkenyl, C1-C8-alkoxy, C2-C8-alkenyloxy, C3-C8-cycloalkyl, C6-C12-aryl, C3-C8-cycloalkoxy, C7-C12-arylalkoxy, C9-C15-alkenylarylalkoxy, nitro-, C6-C12-arylsulfonyl, 4-alkylarylsulfonyl, C1-C20-alkylcarboxy, C1-C8-alkoxycarbonyl, SR14, NHR14 or NR14R15 with R14 and R15 being independently selected from H, linear or branched C1-C20-alkyl, linear or branched C2-C8-alkenyl and C3-C8-cycloalkyl, and an O-, S-or N- containing 5- or 6-membered heterocyclic ring; as well as the mono(acyl)phosphine and/or bis(acyl)phosphine obtained by the process.
DERIVATIVES OF BISACYLPHOSPHINIC ACID, THEIR PREPARATION AND USE AS PHOTOINITIATORS
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Page/Page column 74, (2014/07/08)
Bisacylphosphine oxide or bisacylphosphine sulfide compounds of formula (I) or (II) wherein R1, R2, R3, R1a, R2a and R3a independently of each other are C1-C4alkyl, C1-C4alkoxy or halogen; X is O, NR5 or S; or, if R4 is CI, F or Br, X is a direct bond; Y is O or S; n is 1 or 2; R4, if n is 1, for example is hydrogen, (CO)R6, (CO)OR6, (CO)NR5R6, (SO2)-R6, C1-C28alkyl, R4, if n = 2, is for example C1-C18alkylene; R5 is for example hydrogen, or C1-C12alkyl; R6 is for example C1-C12alkyl; R7, R8 and R9 independently of each other for example are C1-C4alkyl; R10 is for example C2-C18alkylene; X1 is O or S; m is 1, 2 or 3; Q represents one or two inorganic or organic cations with a charge of m+; are suitable photoinitiators, available by a claimed process.
A PROCESS FOR THE PREPARATION OF ACYLPHOSPHANES
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Page/Page column 33, (2014/04/18)
The present invention relates to a versatile, highly efficient process for the preparation of mono- and bisacylphosphanes as well as for their corresponding oxides or sulfides. The invention further relates to novel photoinitiators obtainable by said proc
