Multi-step reaction with 7 steps
1: 84 percent / molecular sieves 3A, iodine, silver carbonate / diethyl ether / 24 h / Ambient temperature
2: 85 percent / sodium methoxide / methanol / 1 h / Ambient temperature
3: 77 percent / p-toluenesulfonic acid / dimethylformamide / 1 h / 60 °C
4: 1.) NaH / 1.) DMF, RT, 0.5 h, 2.) DMF, RT, overnight
5: 83 percent / molecular sieves 3A, sodium cyanotrihydroborate, HCl / diethyl ether / 0.17 h / 0 °C
6: 1.) molecular sieves 3A, silver carbonate, silver zeolite / 1.) CH2Cl2, RT, 1 h, 2.) CH2Cl2, RT, 2 d
7: 1.) BH3*THF / 1.) THF, from -10 deg C to RT, 2.5 h, 2.) THF, methanol, RT, 1 h
With
hydrogenchloride; borane-THF; 3 A molecular sieve; silver zeolite; iodine; sodium methylate; sodium hydride; sodium cyanoborohydride; toluene-4-sulfonic acid; silver carbonate;
In
methanol; diethyl ether; N,N-dimethyl-formamide;
DOI:10.1246/bcsj.68.2401