PS-carbonate	carbonate on polymer support (Sigma-Aldrich code: 21850: loading: 3.5 mmol/g)
PS-DMAP	4-(dimethylamino)pyridine, polymer-bound (Sigma-Aldrich code: 39410, loading: 3 mmol/g)
PS-BEMP	2-tert-butylimino-2-diethylamino-1,3-dimethylperhydro-1,3,2-diazaphosphorine, polymer-bound (Sigma-Aldrich code: 20026, loading: 2.2 mmol/g)
PS-TBD	1,5,7-Triazabicyclo[4.4.0]dec-5-ene bound to polystyrene (Sigma-Aldrich code: 01961, loading: 3.0 mmol/g)
PS-F	fluoride on polymer support (Sigma-Aldrich code: 47060, loading: 3.0 mmol/g)
KF/alumina	potassium fluoride on aluminum oxide (Sigma-Aldrich code: 60244, loading: 5.5 mmol/g)