Ethylenic acetals of sucrose and their copolymerization with vinyl monomers

Potentially Biodegradable Polymers Based on α‐ or β‐Pinene and Sugar Derivatives or Styrene, Obtained under Normal Conditions and on Microwave Irradiation

“…[36,37] A route to selective derivatisation of the 6Ј-position of the sucrose, developed in our laboratory, [38,39] allowed us to obtain the fully protected sucrose with only the 6Ј-hydroxy unprotected, and from this intermediate we prepared unsaturated sucrose esters (Figure 1). [40] These monomers could be converted into pure linear polymers.…”

Regio- and Stereoselective Transformations of Sucrose at the Terminal Positions

“…) In the presence of benzaldehyde, its dimethyl acetal, or (dibromomethyl)benzene, sucrose is converted Ϫ in moderate yields (28Ϫ35%) Ϫ only into the 4,6-acetal 27, which can be isolated after acetylation and purified by crystallization. [35,38] Analogously, 4,6-methylidenesucrose [39] (28) and the corresponding mono-4,6-acetals 29 and 30, derived from β-citral or α-or β-ionone, may be prepared directly from sucrose in high yields ( Figure 3). [40] Figure 3).…”

“…[40] Figure 3). [41] The presence of an unsaturated moiety in compounds 29؊33 opens a route to sucrose-based homo-and copolymers.…”

Sucrose chemistry: Fast and Efficient Microwave-assisted Protocols for the Generation of Sucrose-Containing Monomer Libraries

“…Sucrose-containing polymers, having a polyvinyl backbone and pendant sucrose moieties, have been obtained by polymerization or copolymerization of sucrose derivatives -esters, ethers, and acetals, bearing a carbon-carbon double bond (Fig. 5), (Fanton et al, 1992;Ferreira et al, 2000;Jhurry et al, 1992;Patil et al, 1991). The monomers have been prepared either by multistep synthesis, leading to defined compounds and subsequently a well-defined polymerization processes (Fig.…”

“…Also, the di-and tri-substituted derivatives were not of interest, as they result in cross-linked networks. The first selectively obtained monomer described was the substituted derivative at the three primary positions, then there appeared substituted or hydrolized isopropylidene derivatives with free or acetylated hydroxyl groups, which were also a mixture of 2 isomers (Fanton et al, 1992). To the best of our knowledge, mono-unsaturated sucrose esters at the 1'-position were selectively obtained only with the aid of enzymes (Fig.…”