1: LDA 2: 100 percent / p-TsOH / methanol / 24 h / Ambient temperature 3: Jones reagent / 1.) acetone,15 deg C; 2.) ether 4: 1.) NaNH2,bis(trimethylsilyl)amine 5: 1.) HCl; 2.) 2,4,5-collidine / 1.) CH2Cl2,-20 deg C; 2.) 180-185 deg C, 25 min. 6: 75 percent / 1,5-diazabicyclo<5.4.0>undec-5-ene / various solvent(s) / 2.5 h / 180 - 185 °C 7: LiAlH4 / diethyl ether / 2 h / 0 °C 8: 1.) Li, NH3; 2.) Jones reagent / 1.) Ether, -33 deg C; 2.) 0 deg C, 30 min View Scheme