摘要:
The present invention relates to a new, selective process for the preparation of mono- and bisacylphosphanes of formula (I) n and m are each independently of the other 1 or 2; R1, if n=1, is e.g. phenyl R1, if n=2, is e.g. C1-C18alkylene or phenylene; R2 is e.g. C1-C18alkyl, phenyl or substituted phenyl; R3 is e.g. C1-C18alkyl, by (I) reacting a phosphorous halide of formula IIa or a phosphorous halide oxide of formula (IIb) or a phosphorous halide sulfide of formula (IIc) with an alkali metal in a solvent in the presence of a proton source; (2) subsequent reaction with m acid halides of formula (III) An oxidation step may follow to obtain mono- and bisacylphosphane oxides or mono-and bisacylphosphane sulfides.
摘要翻译:本发明涉及制备式(I)的单 - 和双酰基磷烷的新的选择性方法,n和m各自独立地为1或2; 如果n = 1,则为R 1。 苯基R 1,如果n = 2,则为例如。 C 1 -C 18亚烷基或亚苯基; R 2是例如。 C 1 -C 18烷基,苯基或取代的苯基; R 3是例如。 通过(I)使式IIa的卤化磷或式(IIb)的卤化磷氧化物或式(IIb)的卤化磷化物或式(Ⅳ) IIc)与碱金属在溶剂中在质子源存在下反应; (2)随后与式(III)的酰卤反应可以进行氧化步骤以获得单酰基和双酰基氧化膦或单酰基和双酰基磷烷硫化物。
摘要:
The present invention provides a process for selectively converting dihydroxy-or polyhydroxy alcohols into carbonyl compounds which process comprises the step of oxidizing the dihydroxy-or polyhydroxy alcohols with dioxygen (O2) as oxidant in the presence of a catalytic system comprising (1) a copper salt, a copper salt containing a heterocyclic ligand or a copper complex salt, and (2) a base.
摘要翻译:本发明提供了一种选择性地将二羟基或多羟基醇转化为羰基化合物的方法,该方法包括在二氧化或多羟基醇存在下,将二羟基或多羟基醇用二氧化钛(O 2 O 2) 催化体系包括(1)铜盐,含有杂环配位体的铜盐或铜络合盐,和(2)碱。
摘要:
The invention relates to a process for the preparation of cycloorganylphosphanes of formula 1 (R1P)n by reaction of dihalo(organyl)phosphanes of formula R1PHaI2 with: a) activated zinc in an organic solvent, or with: b) an alkali metal or alkaline earth metal in a non-polar organic solvent in the presence of an activator, wherein R1 is C1-C12alkyl; C3-C12 cycloalkyl, aryl or heteroaryl, Hal is F, Cl, Br or I, and n is a number from 3 to 20. The invention relates also to novel di(alkali metal/alkaline earth metal) oligophosphanediides and to the use thereof in the preparation of organophosphorus compounds.
摘要翻译:本发明涉及通过式R 1的二卤代(有机基)磷烷的反应来制备式1的环氧基磷烷(R 1 P 1)n的方法, 其中:a)在有机溶剂中活化的锌,或者在b)碱金属或碱土金属的非极性有机溶剂中,在活化剂存在下,其中 R 1是C 1 -C 12烷基; R 1是C 1 -C 12烷基; C 3 -C 12环烷基,芳基或杂芳基,Hal是F,Cl,Br或I,n是3至20的数。本发明还涉及 新型二(碱金属/碱土金属)低聚二氧化膦及其在制备有机磷化合物中的应用。
摘要:
The invention relates to novel phosphorus compounds, to a method for producing said phosphorus compounds and their intermediate products. The invention also relates to the catalysts produced according to the invention on the basis of the phosphorus compounds and to their use in catalytic processes, especially in asymmetric catalytic processes.