4-Formyl Phenoxy on HypoGel® Resins ( FP-linker)
HypoGel® is a hydrophilic gel type resin which combines high capacities with good solvent compatibility. Glycol spacers with n = 5 or 10 EO units separate the reactive sites from the polystyrene matrix and modify the hydrophobic properties of the polystyrene backbone. Due to the spacer effect the functional group shows a higher mobility which results in higher kinetic rates and high resolution NMR spectra from immobilized compounds on the bead. The resin is compatible to a wide range of solvents and in contrast to polystyrene even polar solvents like methanol or ethanol can be used.
These resins show high loading and a hydrophilicity between polystyrene and TentaGel®
Due to the lack of amide bonds and of benzylic linkages as well as the very good swelling properties in a broad variety of solvents this resin is well suited for solid phase syntheses of secondary sulfonamides and carboxamides.
Literature
L 17, L 30, L 31