diisobutylaluminium hydride in tetrahydrofuran; hexane

1: 1.) lithium N-cyclohexyl-N-isopropylamide / 1.) -78 deg C, 1 h, then over 1 h 10 deg C, THF, 2.) room temp. overnight 2: diisobutylaluminum hydride / hexane; tetrahydrofuran View Scheme

1: 1.) lithium N-cyclohexyl-N-isopropylamide / 1.) -78 deg C, 1 h, then over 1 h 10 deg C, THF, 2.) room temp. overnight 2: diisobutylaluminum hydride / hexane; tetrahydrofuran View Scheme