Polyamides and polyesters containing 2,4:3,5-O-methylene-L-idaroyl residues
article
Electrochemical oxidation of 2,4:3,5‐di‐O‐methylene‐D‐gluconic acid in strong alkaline medium afforded a mixture of 2,4:3,5‐di‐O‐methylene‐D‐glucaric acid 4 and 2,4:3,5‐di‐O‐methylene‐L‐idaric acid 1 in a 1/8 ratio with a current efficiency of 53%. Force‐field calculations using Allinger's molecular mechanics program MM2p85 on 1 and 4 indicate that these cis‐fused tetrahydro‐[1,3]dioxino[5,4‐d]‐1,3‐dioxin ring systems possess an O‐inside conformation with a steric energy of 110.3 and 123.5 kJ·mol−1, respectively. Their conformation was confirmed by 400‐MHz 1H‐ and 100‐MHz 13C NMR measurements. A series of polycondensates were prepared by homogeneous solution polymerisation of 1 with an aromatic diol or aromatic diamine, which were analyzed by DSC and TGA
TNO Identifier
68673
Source
Recueil des Travaux Chimiques des Pays-Bas, 109(3), pp. 181-186.
Pages
181-186
Files
To receive the publication files, please send an e-mail request to TNO Repository.