Multi-step reaction with 9 steps
1: 100 percent / L-Selectride / tetrahydrofuran / 2 h / -78 °C
2: 100 percent / NaH / tetrahydrofuran / Ambient temperature
3: 81 percent / 1) O3, 2) Me2S / methanol / 1) -78 deg C, 15 min
4: 100 percent / NaBH4 / ethanol / 2 h / 0 °C
5: 100 percent / pyridine / Ambient temperature
6: 1) TMSOTf, 2,6-lutidine, 2) DBU / 1) CH2Cl2, -78 deg C, 4.5 h, 2) -78 deg C, 3 h, then H(1+), MeOH, room temp., 1 h
7: 87 percent / iPr2NEt / 1,2-dichloro-ethane / 4 h / 80 °C
8: 100 percent / K2CO3 / methanol / Ambient temperature
9: 100 percent / PDC-celite / CH2Cl2 / Ambient temperature
With
2,6-dimethylpyridine; sodium tetrahydroborate; dimethylsulfide; trimethylsilyl trifluoromethanesulfonate; pyridinium dicromate - silica gel; L-Selectride; sodium hydride; potassium carbonate; ozone; 1,8-diazabicyclo[5.4.0]undec-7-ene; N-ethyl-N,N-diisopropylamine;
In
tetrahydrofuran; pyridine; methanol; ethanol; dichloromethane; 1,2-dichloro-ethane;
DOI:10.1016/S0040-4039(01)80335-X