Table 1.
means of handle attachment | reducing agent | solvent and conditions | rxn time | yield | ref |
---|---|---|---|---|---|
aldehyde | NaCNBH3 | HOAc, r.t. | 1 h | 80% | 11 |
aldehyde | BH3-Et3N | HCl/EtOH, 0°C | 5 m | 65% | 16 |
ketone | BH3- tBuNH2 | HCl,/EtOH/ dioxane, 0 °C | 2.5 h | 69% | 19 |
ketone | NaCNBH3 | HOAc/DCE/ MeOH, r.t. | 90 m | 88% | 24 |
glycyl linker | BH3-Me3N | HCl/EtOH, 0 °C | 5 h | 85% | 15 |