1: (i) NaOMe, MeOH, (ii) /BRN= 1850241/, (iii) aq. NaOH 2: NaH / diethyl ether / Heating 3: (i) NaH, dioxane, (ii) /BRN= 741886/ View Scheme

1: CCl4, trioctylphosphane / 0.5 h 2: (i) NaOMe, MeOH, (ii) /BRN= 1850241/, (iii) aq. NaOH 3: NaH / diethyl ether / Heating 4: (i) NaH, dioxane, (ii) /BRN= 741886/ View Scheme

1: LiAlH4 / diethyl ether 2: CCl4, trioctylphosphane / 0.5 h 3: (i) NaOMe, MeOH, (ii) /BRN= 1850241/, (iii) aq. NaOH 4: NaH / diethyl ether / Heating 5: (i) NaH, dioxane, (ii) /BRN= 741886/ View Scheme

1: NaH / diethyl ether / Heating 2: (i) NaH, dioxane, (ii) /BRN= 741886/ View Scheme

(i) NaH, dioxane, (ii) /BRN= 741886/; Multistep reaction;