1: NaAlH2(OCH2CH2OCH3)2 / toluene / -70 °C 2: BuLi / diethyl ether 3: 1.) B2H6, NaOH, H2O2; 2.) CrO3, pyridine / 1.) THF; 2.) CH2Cl2 View Scheme

1: BuLi / diethyl ether 2: 1.) B2H6, NaOH, H2O2; 2.) CrO3, pyridine / 1.) THF; 2.) CH2Cl2 View Scheme

pyridine; chromium(VI) oxide; sodium hydroxide; dihydrogen peroxide; diborane 1.) THF; 2.) CH2Cl2; Multistep reaction;