Then, the hydrogenation of isomaltulose leads to the production of the stereoisomer, disaccharide alcohol 1-O-[ALPHA]-D-glucopyranosyl-D-mannitol dihydrate (1,1-GPM dihydrate), and 6-O-[alpha]- D-glucopyranosyl-D-sorbitol (1,6-GPS) in an approximate
equimolecular mixture.
In the present study we describe the results of the poly-condensation of an aromatic bisphenol incorporating DOPO, 2-(6-oxido-6H-dibenz<c,e>< 1,2>oxaphosphorin-6-yl)-l,4-naphthalenediol 1, or equimolecular amount of 1 and different bisphenols 2, with a diacid chloride containing two preformed ester groups 3.
For the synthesis of copolyesters 4b-4d the same method was used, equimolecular amounts of bisphenols 1 and 2 being added (Scheme 1).
Aromatic copolyesters 4 were synthesized from a DOPO-containing bisphenol 1 or an equimolecular amount of 1 and different bisphenols 2 with a diacid chloride having two ester groups 3 (Scheme 1).