Multi-step reaction with 14 steps
1: 93 percent / Et3N / CH2Cl2 / 0.5 h / 0 °C
2: 1.) O3, pyridine, 2.) Me2S / 1.) CH3OH, CH2Cl2, -78 deg C, 2.) CH3OH, CH2Cl2, RT, 12 h
3: 1.) KHMDS, 18-crown-6 / 1.) THF, toluene, -78 deg C, 10 min, 2.) THF, toluene, 0 deg C, 5 h
4: 92 percent / LiAlH4 / tetrahydrofuran / 0.5 h / 0 °C
5: 96 percent / pyridine / CH2Cl2 / 4 h / Ambient temperature
6: 90 percent / HF, pyridine / tetrahydrofuran / 9 h / Ambient temperature
7: 1.) oxalyl chloride, DMSO, 2.) Et3N / 1.) CH2Cl2, -78 deg C, 45 min, 2.) CH2Cl2, from -78 to RT, 20 min
8: 1.) KOtBu / 1.) THF, -78 deg C, 10 min, 2.) THF, -50 deg C, 21 h
9: 88 percent / H2 / 10percent Pd*BaSO4 / methanol; quinoline / 0.17 h
10: DIBAL-H
11: Et3N
12: LiBr
13: LDA
14: 1.) LiN(SiMe2Ph)2 / 1.) THF, -78 deg C, 1 h, 2.) THF, RT, 3 h
With
pyridine; lithium aluminium tetrahydride; oxalyl dichloride; 18-crown-6 ether; dimethylsulfide; lithium bis(dimethylphenylsilyl)amide; hydrogen fluoride; potassium tert-butylate; hydrogen; potassium hexamethylsilazane; diisobutylaluminium hydride; ozone; dimethyl sulfoxide; triethylamine; lithium bromide; lithium diisopropyl amide;
palladium on barium sulfate;
In
tetrahydrofuran; quinoline; methanol; dichloromethane;
DOI:10.1021/ja961374o