Preparation of substituted 6-amino-(6H)-dibenz(c,e)(1,2)-oxazaphosphorine compound, useful as flame retardant e.g. in epoxide resin, comprises transamination of (6H)-dibenz(c,e)(1,2)-oxazaphosphorine compound using amine compound

摘要

Preparation of a substituted 6-amino-(6H)-dibenz[c,e][1,2]-oxazaphosphorine compound (VI), comprises transamination of an 6-alkylamino-(6H)-dibenz[c,e][1,2]-oxazaphosphorine compound (IVa) using an amine compound (a). Preparation of a substituted 6-amino-(6H)-dibenz[c,e][1,2]-oxazaphosphorine compound of formula (VI), comprises transamination of an 6-alkylamino-(6H)-dibenz[c,e][1,2]-oxazaphosphorine compound of formula (IVa) using an amine compound of formula (R1-NH-X-N(R2)-R5) (a). X : arylene, alkylene, cycloalkylene, bisarylene, bisarylenealkylene, ketone or its derivative, imine, carbonate, O, bisaryleneoxide, sulfide, sulfoxide, sulfone, amine, phosphor derivate or silicon derivative; R1, R2 : alkyl, cycloalkyl or aryl (all optionally substituted), allyl, aryl, H, arylalkyl, heteroaryl or heterocycloalkyl; R3, R4 : H, alkyl, cycloalkyl or aryl; n : 0-5; and R5 : R2 or R3. Independent claims are included for: (1) the substituted 6-amino-(6H)-dibenz[c,e][1,2]-oxazaphosphorine compound (VI); and (2) use of 6-amino-(6H)-dibenz[c,e][1,2]-oxazaphosphorine compounds of formulae (IV) and (V), and (VI) as flame retardant. [Image] [Image].