Synthesis of L-arabinitol and xylitol monomers for the preparation of polyamides. Preparation of an L-arabinitol-based polyamide.

Abstract Dihydrochlorides of 1,5-diamino-1,5-dideoxy-2,3,4-tri- O -methyl- l -arabinitol (and xylitol) and pentachlorophenyl esters of 2,3,4-tri- O -methyl- l -arabinaric (and xylaric) acids have been prepared as suitable bifunctional monomers for linear polycondensations. A new aregic AABB-type l -arabinitol-based polyamide is also described from the corresponding monomers. It was crystalline with T m 250 °C, optically active, and soluble in the usual organic solvents, including chloroform, and in water. Its M w obtained by GPC was 27,500 with a polydispersity of 1.4.