Process for the production of phosphor organic compounds

A phosphonite or phosphinite of general formula (I)

• where
• aryl is a substituted or unsubstituted aryl or heteroaryl radical;
• R is any organic radical having 5-36 carbon atoms, which can also contain hetero atoms;
• and
• A is either R or OR,
• prepared by reacting a Friedel-Crafts reaction product of general formula (II)
• where
• aryl has the meaning above;
• Hal is halogen;
• and
• A′ is either Hal or R,
• with a hydroxyl compound of the formula (III)
• R—OH (III)
• where
• R has the meaning above,
• separating off a majority of insoluble byproducts formed during the reaction, characterized in that an aftertreatment is carried out wherein the aftertreatment comprises:
• adding
• a) a protic compound selected from the group consisting of alcohols, ammonia, primary amines, secondary amines and water, or
• b) an oxide, hydroxide, (hydrogen)carbonate or (hydrogen)phosphate of a metal, or
• c) a nitrogen containing compound selected from the group consisting of carbonic acid amides, thiocarbonic acid amides, carbonic acid imides, thiocarbonic acid imides, lactames, thiolactames, carbonic acid hydrazides, urea, thiourea, symmetrically and asymmetrically substituted urea and thiourea derivatives, urethanes, uretimides, guanidine and its salts and melamine and derivatives thereof, including polymeric compounds of all named classes, or
• d) any combination of one or more of the compounds of a) to c),
• wherein the addition of a) to d) is carried out in the absence of a solvent or in an inert, nonpolar solvent, and separating off resulting byproducts from the reaction mixture, wherein the phosphonite or phosphinite is characterized by a content of chloride or hydrolysable chlorine, determined by argentometric titration, of less than 0.5%.