Multi-step reaction with 6 steps
1: 78.7 g / Li2CuCl4 / tetrahydrofuran / 12 h / -78 °C / to RT
2: 1.) O3, NaHCO3; 2.) NaBH4 / 1.) n-hexane, MeOH, CH2Cl2, -78 deg C, 10 h; 2.) n-hexane, MeOH, CH2Cl2, -78 deg C to 0 deg C, 3 h
3: 98 percent / pyridine / 12 h / 4 °C
4: 96 percent / NaI, NaHCO3 / acetone / 4 h / Heating
5: 87 percent / dimethylformamide / 10 h / Ambient temperature
6: 81 percent / n-BuLi / hexane; tetrahydrofuran; hexamethylphosphoric acid triamide / 10 h / Ambient temperature
With
sodium tetrahydroborate; n-butyllithium; dilithium tetrachlorocuprate; sodium hydrogencarbonate; ozone; sodium iodide;
In
tetrahydrofuran; pyridine; N,N,N,N,N,N-hexamethylphosphoric triamide; hexane; N,N-dimethyl-formamide; acetone;
DOI:10.1002/(SICI)1099-0690(199905)1999:5<981::AID-EJOC981>3.0.CO;2-3