Diisobutylaluminum hydride → HCID 21087551, compound

Participants

Reaction Conditions

Reaction Steps

Ethyl 2-ethylbenzotriazole-5-carboxylate (0.7 g, 3.06 mmol) was dissolved in dry toluene (10 mL) and cooled to 0° C. under nitrogen. A solution of DIBAL-H (1.5M in toluene, 3 mL, 4.5 mmol) was then added dropwise to the cooled solution over 15 minutes. The reaction was stirred at 0° C. for one hour when further DIBAL-H (1.5 mL, 2.25 mmol) was added. A further aliquot of DIBAL-H (0.75 mL, 1.12 mmol) was added after 2 hours and the reaction was stirred for further 30 min. The reaction was quenched by addition of a saturated solution of sodium potassium tartrate, diluted with water and extracted with AcOEt. The organic layer was dried over sodium sulfate to give a crude oil (440 mg) which was used directly in the following step.

Provenance & Evidence