General procedure I for the HWE reaction to obtain acrylamides. Diethyl (2-amino-2-oxoethyl)phosphonate (0.75 mmol, 1.5 equiv.) and 1,8-diazabicyclo[5.4.0]undec-7-ene (0.75 mmol, 1.5 equiv.) were added to a suspension of LiCl (0.75 mmol, 1.5 equiv.) in MeCN (dry, ~ 0.2 M). The mixture was stirred for 10 min at ambient temperature before the aldehyde (0.5 mmol, 1 equiv.) was added as a suspension in chloroform (dry, ~ 0.8 M). The reaction was monitored via TLC and quenched after complete conversion with sat. NH4Cl solution. Water (15 mL) was added, and the phases were separated. The aq. layer was extracted with EtOAc (3 × 15 mL), and the combined organic layers were washed with sat. NH4Cl solution (2 × 15 mL), sat. NaHCO3 solution (2 × 15 mL), and brine (1 × 15 mL). The solvent was removed under reduced pressure after drying over Na2SO4. The resulting crude product was purified by flash column chromatography. The compounds were isolated as a mixture of E/Z isomers, resulting in NMR spectra of high complexity.