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    • 3. 发明授权
    • Process for preparing acylphosphanes and derivatives thereof
    • 制备酰基磷烷及其衍生物的方法
    • US07687657B2
    • 2010-03-30
    • US11667780
    • 2005-11-14
    • Peter MurerJean-Pierre WolfStephan BurkhardtHansjörg GrützmacherDaniel SteinKurt Dietliker
    • Peter MurerJean-Pierre WolfStephan BurkhardtHansjörg GrützmacherDaniel SteinKurt Dietliker
    • C07C69/76C07C69/95
    • G03F7/029C07F9/5036C07F9/5337C07F9/5537C07F9/65515C07F9/6552
    • The invention relates to a process for the preparation of (bis)acylphosphanes of formula I, wherein n and m are each independently of the other 1 or 2; R1 if n=1, is e.g. unsubstituted or substituted C1-C18alkyl or C2-C18alkenyl, or phenyl, R1 if n=2, is e.g. a divalent radical of the monovalent radical defined above; R2 is e.g. C1-C18alkyl, C3-C12cycloalkyl, C2-C18alkenyl, mesityl, phenyl, naphthyl; R3 is one of the radicals defined under R1; the process comprises the steps a) contacting e.g. elemental phosphorous [P]∞, P(Hal)3 with a reducing metal optionally in the presence of a catalyst or an activator in a solvent to obtain metal phosphides Me3P or Me′3P2, wherein Me is an alkali metal and Me′ is an earth alkali metal or to obtain metal polyphosphides b) optionally adding a proton source, optionally in the presence of a catalyst or an activator to obtain metal dihydrogen phosphides MePH2; c) subsequent acylation reaction with m acid halides of formula III or m carboxylic acid esters of formula IV or, in case that in formula I m=1, with one carboxylic ester of formula IV followed by one acid halide of formula III or vice versa, wherein R is the residue of an alcohol and R2 is as defined above; d) alkylation reaction subsequent reaction with an electrophilic agent R1Hal or other electrophilic agents to obtain the compounds of formula I. An oxidation step may follow to obtain mono- and bisacylphosphane oxides or mono- and bisacylphosphane sulfides, which are used as photoinitiators.
    • 本发明涉及制备式(I)的(双)酰基磷烷的方法,其中n和m各自独立地为1或2; 如果n = 1,则为R1。 未取代或取代的C1-C18烷基或C2-C18链烯基,或苯基,如果n = 2,则为R1。 上述定义的一价基团的二价基团; R2是例如 C 1 -C 18烷基,C 3 -C 12环烷基,C 2 -C 18烯基,三甲苯基,苯基,萘基; R3是R1下定义的基团之一; 该方法包括以下步骤:a) 元素磷[P]∞,P(Hal)3与还原金属,任选在催化剂或活化剂存在下在溶剂中,得到金属磷化物Me3P或Me'3P2,其中Me为碱金属,Me'为 碱土金属或获得金属多磷酸盐b)任选地在催化剂或活化剂存在下加入质子源以获得金属二磷化磷MePH2; c)随后与式III的酰基卤或式IV的羧酸酯的酰化反应,或在式I中m = 1的情况下,与一种式IV的羧酸酯接触,然后加入式III的酰卤,反之亦然 其中R是醇的残基,R 2如上所定义; d)烷基化反应随后与亲电子试剂R1Hal或其他亲电子试剂反应以获得式I化合物。随后可以进行氧化步骤以获得用作光引发剂的单酰基和双酰基膦烷氧化物或单酰基和双酰基磷烷硫化物。