Multi-step reaction with 12 steps
1: 97 percent / 2,6-lutidine / CH2Cl2
2: 48 percent / OsO4; aq. NMO / tetrahydrofuran
3: 81 percent / p-TsOH; CuSO4 / 20 °C
4: 80 percent / TPAP; NMO; molecular sieves / CH2Cl2
5: 92 percent / 18-crown-6; KHMDS / tetrahydrofuran / -78 °C
6: 99 percent / DIBAL-H / CH2Cl2 / -78 °C
7: 67 percent / D-DET; Ti(O-i-Pr)4; t-BuOOH / molecular sieves
8: 80 percent / NaH; Bu4NI
9: 52 percent / CSA / CH2Cl2; propan-2-ol
10: 91 percent / imidazole / dimethylformamide
11: 71 percent / NaH; Bu4NI
12: 83 percent / TBAF / tetrahydrofuran
With
1H-imidazole; 2,6-dimethylpyridine; titanium(IV) isopropylate; tert.-butylhydroperoxide; osmium(VIII) oxide; N-methyl-2-indolinone; molecular sieve; tetrapropylammonium perruthennate; 18-crown-6 ether; diethyl (2S,3S)-tartrate; camphor-10-sulfonic acid; tetrabutyl ammonium fluoride; tetra-(n-butyl)ammonium iodide; potassium hexamethylsilazane; sodium hydride; diisobutylaluminium hydride; toluene-4-sulfonic acid; copper(II) sulfate;
molecular sieve;
In
tetrahydrofuran; dichloromethane; N,N-dimethyl-formamide; isopropyl alcohol;
5: Horner-Wadsworth-Emmons reaction;
DOI:10.1055/s-2004-835661