Multi-step reaction with 6 steps
1.1: sodium tetrahydroborate; nickel(II) chloride hexahydrate / tetrahydrofuran; methanol / 1 h / 0 °C / Inert atmosphere
2.1: hydrogenchloride / 1,4-dioxane; methanol / 5 h / 20 °C
3.1: sulfur trioxide pyridine complex; dimethyl sulfoxide; N-ethyl-N,N-diisopropylamine / ethyl acetate / 0.33 h / 0 °C / Inert atmosphere
4.1: sodium hydride / tetrahydrofuran; mineral oil / 1.5 h / 0 - 20 °C / Inert atmosphere
4.2: 1 h / 0 - 20 °C
5.1: borane-THF; (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole / tetrahydrofuran; toluene / 0.42 h / 20 °C / Inert atmosphere
6.1: sodium hydroxide / 1,2-dimethoxyethane / 2 h / 20 °C
With
hydrogenchloride; sodium tetrahydroborate; borane-THF; nickel(II) chloride hexahydrate; sulfur trioxide pyridine complex; sodium hydride; dimethyl sulfoxide; N-ethyl-N,N-diisopropylamine; sodium hydroxide; (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole;
In
tetrahydrofuran; 1,4-dioxane; methanol; 1,2-dimethoxyethane; ethyl acetate; toluene; mineral oil;
4.2: Horner-Wadsworth-Emmons olefination;
DOI:10.1016/j.bmc.2012.02.018