Multi-step reaction with 7 steps
1: 1.) Mg, I2, 2.) <1,3-bis(diphenylphosphino)propane>nickel(II) chloride, diisobutylaluminum hydride, 3.) aq. HCl
2: 73 percent / ethanol / 4 h / Heating
3: 1.) NaCNBH3, p-TsOH, 2.) aq. NaOH / 1.) THF, RT, 37 h, 2.) THF, reflux, 3.5 h
4: 73 percent / propan-2-ol / 16 h / 80 °C
5: 91 percent / aq. K2CO3 / methanol / 3 h / Heating
6: 1.) N-ethyl-N'-<3-(dimethylamino)propyl>carbodiimide hydrochloride, 1-hydroxybenzotriazole, Et3N / 1.) DMF, 30 min, 2.) DMF, RT, 3 h
7: 70 percent / HCO2H / 4 h / Ambient temperature
With
hydrogenchloride; sodium hydroxide; formic acid; 1,3-bis[(diphenylphosphino)propane]dichloronickel(II); iodine; diisobutylaluminium hydride; sodium cyanoborohydride; potassium carbonate; benzotriazol-1-ol; toluene-4-sulfonic acid; magnesium; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine;
In
methanol; ethanol; isopropyl alcohol;
DOI:10.1021/jm970873c