The effect of the molecular character and extent of crosslinking units on polymer-analogous benzil-benzilic acid rearrangement was investigated. A typical hydrophobic styrene-divinylbenzene copolymer and a hydrophilic styrene-tetraethyleneglycol diacrylate copolymer were used as the polymer supports. Supports with crosslink densities varying from 2 to 20% were functionalized. The polymer-bound aldehydes were subjected to crossed benzoin condensation in the presence of benzaldehyde. The benzoin analogues were converted to benzils and then subjected to benzil-benzilic acid rearrangement. The products were characterized by i.r. and 13C n.m.r, spectroscopy and the extent of rearrangement was determined by chemical methods.
Посилання на статтю:
Benzil-benzilic acid rearrangement in crosslinked macromolecular systems: effect of crosslinking / Sunny Kuriakose and V. N. Rajasekharan Pillai* // Polymer. – 1994. – Vol 35. – P. 1339-1341.