methyl (E)-3-cyclohexylprop-2-enoate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 29.25 g (0.174 mol) of (2E)-3-cyclohexylpropenoic acid methyl ester was dissolved in 200 ml of ether (dried over dry nap). Thereto was added 412 ml (0.383 mol) of diisobutylaluminum hydride (n-hexane solution, 0.93N) in an argon stream at -60° C. over a 15-minute period. The mixture was stirred at the same temperature for 30 minutes. n-Hexane and diethyl ether were added. The resulting mixture was washed with a saturated aqueous ammonium chloride solution, hydrochloric acid (0.2N) and a saturated aqueous sodium chloride solution, dried over magnesium sulfate, and concentrated. The concentrate was purified by silica gel column chromatography (n-hexane/ethyl acetate=19/1 to 9/1) and distillation (57.0°-58.5° C./0.40-0.42 mmHg) to obtain 20.1 g (0.143 mol) of (2E)-3-cyclohexyl-2-propen-1-ol. The resulting mixture was washed with a saturated aqueous ammonium chloride solution, hydrochloric acid (0.2N) a saturated aqueous sodium chloride solution, dried over magnesium sulfate concentrated The concentrate was purified by silica gel column chromatography (n-hexane/ethyl acetate=19/1 to 9/1) and distillation (57.0°-58.5° C./0.40-0.42 mmHg)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 29.25 g (0.174 mol) of (2E)-3-cyclohexylpropenoic acid methyl ester was dissolved in 200 ml of ether (dried over dry nap). Thereto was added 412 ml (0.383 mol) of diisobutylaluminum hydride (n-hexane solution, 0.93N) in an argon stream at -60° C. over a 15-minute period. The mixture was stirred at the same temperature for 30 minutes. n-Hexane and diethyl ether were added. The resulting mixture was washed with a saturated aqueous ammonium chloride solution, hydrochloric acid (0.2N) and a saturated aqueous sodium chloride solution, dried over magnesium sulfate, and concentrated. The concentrate was purified by silica gel column chromatography (n-hexane/ethyl acetate=19/1 to 9/1) and distillation (57.0°-58.5° C./0.40-0.42 mmHg) to obtain 20.1 g (0.143 mol) of (2E)-3-cyclohexyl-2-propen-1-ol. The resulting mixture was washed with a saturated aqueous ammonium chloride solution, hydrochloric acid (0.2N) a saturated aqueous sodium chloride solution, dried over magnesium sulfate concentrated The concentrate was purified by silica gel column chromatography (n-hexane/ethyl acetate=19/1 to 9/1) and distillation (57.0°-58.5° C./0.40-0.42 mmHg)