Multi-step reaction with 9 steps
1: oxalyl chloride; dimethyl sulfoxide; triethylamine / CH2Cl2 / 4.5 h / -78 - 20 °C
2: diethylzinc / Pd(OAc)2; PPh3 / tetrahydrofuran; hexane / 72 h / -20 °C
3: 95 percent / 2,6-lutidine / CH2Cl2 / -50 - 20 °C
4: 1,2-dimethoxy-ethane / 3.08 h / 0 - 20 °C
5: 3.11 g / H2O2; NaOH / 1,2-dimethoxy-ethane; H2O / 0.42 h / 0 - 20 °C
6: 95 percent / sodium borohydride / tetrahydrofuran; methanol / 1 h / 0 °C
7: 97 percent / pyridinium p-toluenesulfonate / CH2Cl2 / 72 h
8: 96 percent / CuCl2*2H2O / acetonitrile / 20 h / -5 °C
9: 96 percent / NaH; N-(2,4,6-triisopropylbenzenesulfonyl)imidazole / tetrahydrofuran / 0 - 20 °C
With
2,6-dimethylpyridine; sodium hydroxide; sodium tetrahydroborate; oxalyl dichloride; dihydrogen peroxide; diethylzinc; pyridinium p-toluenesulfonate; sodium hydride; dimethyl sulfoxide; triethylamine; 1-[(2,4,6-triisopropylphenyl)sulfonyl]-1H-imidazole;
palladium diacetate; triphenylphosphine;
In
tetrahydrofuran; methanol; 1,2-dimethoxyethane; hexane; dichloromethane; water; acetonitrile;
1: Swern oxidation / 2: Marshall reaction;
DOI:10.1021/ol0629317