Multi-step reaction with 9 steps
1: 1.) zinc, iodine / 1.) THF, rt, 15 min, ultrasonication; 2.) THF, rt, 35 min, ultrasonication
2: 95 percent / ammonia gas / diethyl ether / -78 °C
3: 1.) BH3(CH3)2S; 2.) sat.hydrogen chloride; 3.) NaHCO3, Na2CO3, / 1.) THF, reflux, 4 h; 2.) Et2O, 0.45 min; 3.) water/THF, rt, 15 h
4: trifluoroacetic acid / 1.5 h / 0 °C
5: N-methylmorpholine, isobutylchloroformate / acetonitrile; dimethylformamide / 15 h / -20 - 20 °C
6: 1.) tin(II) chloride dihydrate; 2.) H2O / ethanol / 3 h / Heating
7: 0.68 g / sodium bicarbonate / ethanol; H2O / 16 h / Ambient temperature
8: hydrogen / 10percent palladium on charcoal / ethanol / 12 h / 760 Torr / Ambient temperature
9: 1.) N-methylmorpholine, isobutylchloroformate / 1.) acetonitrile, -20 deg C, 15 min; 2.) acetonitrile, rt, 15 h
With
4-methyl-morpholine; hydrogenchloride; dimethylsulfide borane complex; ammonia; water; hydrogen; iodine; sodium hydrogencarbonate; sodium carbonate; trifluoroacetic acid; tin(ll) chloride; zinc; isobutyl chloroformate;
palladium on activated charcoal;
In
diethyl ether; ethanol; water; N,N-dimethyl-formamide; acetonitrile;
DOI:10.1016/0040-4020(95)00896-G