Method for the production of dibenz[c,e] [1,2]-oxaphosphorin derivatives, amino-dibenz[c,e] [1,2]-oxaphosphorin and also use thereof

A method of producing a dibenz[c,e] [1,2]-oxaphosphorin compound of the general formula I

• wherein a 6H-dibenz[c,e] [1,2]-oxaphosphorin-6-oxide of the general formula II
• reacts with a compound of the general formula III
• Z-A Formula III
• to form the compound of formula I, wherein in the general formulae I, II and III respectively, independently of each other,
• x and y are 0, 1, 2, 3 or 4,
• R1 and R2 are the same or different and are selected from the group consisting of hydrogen, linear or branched C1-C22 alkyl, linear or branched C1-C22 O-alkyl or O-aryl, alkylsulphonyl, arylsulphonyl, thioaryl, thioalkyl, linear or branched C3-C22 alkenyl, linear or branched C3-C22 alkynyl, linear or branched C1-C22 hydroxyalkyl, linear or branched C3-C22 alkoxycarbonylalkyl, C3-C12 cycloalkyl, C6-C14 aryl, C7-C22 aralkyl, C7-C22 alkylaryl, an optionally substituted piperidin-4-yl group and halogen atoms,
• A is a primary amine, a secondary amine substituted in a similar or mixed manner, a heterocyclic amine or a hydrazine compound, and
• Z is hydrogen, lithium, sodium or potassium.