Multi-step reaction with 11 steps
1: 94 percent / LDA, MeI, NaHCO3
2: 93 percent / NaBH4, CeCl3*7H2O
3: NaHCO3 / tetrahydrofuran
4: aq. H2O2, NaHCO3 / tetrahydrofuran
5: t-BuOOH, Ti(O-i-Pr)4, (+)-DIPT / CH2Cl2
6: 1.) (COCl)2, DMSO, 2.) Et3N / 1.) CH2Cl2
7: 72 percent / tetrahydrofuran / -78 °C
8: 100 percent / Dess-Martin periodinane
9: 60 percent / diethyl ether / -78 °C
10: 76 percent / 2,6-lutidine / CH2Cl2 / -35 °C
11: O3, (CF3CO)2O, NaHCO3, Et3N / CH2Cl2 / -78 °C
With
2,6-dimethylpyridine; titanium(IV) isopropylate; tert.-butylhydroperoxide; sodium tetrahydroborate; cerium(III) chloride; oxalyl dichloride; L-(+)-diisopropyl tartrate; dihydrogen peroxide; sodium hydrogencarbonate; Dess-Martin periodane; ozone; dimethyl sulfoxide; triethylamine; trifluoroacetic anhydride; lithium diisopropyl amide; methyl iodide;
In
tetrahydrofuran; diethyl ether; dichloromethane;
DOI:10.1039/a800011e