Multi-step reaction with 11 steps
1.1: 100 percent / sodium hydride / dimethylformamide / 0.5 h / 20 °C
2.1: 93 percent / sodium cyanoborohydride; HCl; 3 Angstroem molecular sieve / tetrahydrofuran; diethyl ether / 0.17 h
3.1: 100 percent / Dess-Martin periodinane / CH2Cl2 / 1 h
4.1: 66 percent / diethyl ether / 0.5 h / -78 °C
5.1: 100 percent / p-toluenesulfonic acid monohydrate / Pd/C / methanol; H2O / 12 h / 70 °C
6.1: dibuthyltin oxide / benzene; methanol / 12 h / 70 °C
6.2: 100 percent / Et3N / dioxane / 0.5 h / 20 °C
7.1: 94 percent / N-ethyl-diisopropylamine / CH2Cl2 / 0.5 h
8.1: 100 percent / H2 / Pd(OH)2 / ethanol / 24 h / 20 °C / 760.05 Torr
9.1: 99 percent / diisopropylethylamine / dimethylformamide / 0.75 h / 20 °C
10.1: 75 percent / 2,6-lutidine / CH2Cl2 / 24 h / 20 °C
11.1: 95 percent / Bu4NF; BF3*OEt2 / acetonitrile; tetrahydrofuran / 1 h / 20 °C
With
2,6-dimethylpyridine; hydrogenchloride; 3 A molecular sieve; boron trifluoride diethyl etherate; tetrabutyl ammonium fluoride; hydrogen; sodium hydride; di(n-butyl)tin oxide; sodium cyanoborohydride; Dess-Martin periodane; toluene-4-sulfonic acid; N-ethyl-N,N-diisopropylamine;
palladium dihydroxide; palladium on activated charcoal;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; dichloromethane; water; N,N-dimethyl-formamide; acetonitrile; benzene;
DOI:10.1021/ol010089t