Multi-step reaction with 11 steps
1: 92 percent / imidazol / dimethylformamide / 120 h / 40 °C
2: 50 percent / lithium aluminium hydride, aluminium trichloride / CH2Cl2; diethyl ether / 0.5 h / 20 °C
3: oxalyl chloride, DMSO / CH2Cl2 / 0.25 h / -78 °C
4: 2-methyl-2-butene, sodium chlorite, sodium dihydrogen phosphate / 2-methyl-propan-2-ol; H2O / 0.5 h / 20 °C
5: 4 Angstroem molecular sieves / CH2Cl2 / 4 h / 20 °C
6: ammonia / CH2Cl2 / 0.67 h / 0 °C
7: 70 percent / TBAF / tetrahydrofuran / 1 h / 20 °C
8: CH2Cl2 / 14 h / 20 °C
9: Zn dust / methanol / 5 h / 20 °C
10: 57 percent / TBAF / tetrahydrofuran; H2O / 5 h / 20 °C
11: 84 percent / 4-dimethylaminopyridine, DCC / dimethylformamide / 24 h / 20 °C
With
1H-imidazole; dmap; sodium chlorite; lithium aluminium tetrahydride; aluminium trichloride; sodium dihydrogen phosphate; 2-methyl-but-2-ene; oxalyl dichloride; 4 A molecular sieve; tetrabutyl ammonium fluoride; ammonia; dimethyl sulfoxide; dicyclohexyl-carbodiimide; zinc;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane; water; N,N-dimethyl-formamide; tert-butyl alcohol;
DOI:10.1016/S0040-4020(01)85066-3