1,8-Diazabicyclo(5.4.0)undec-7-ene → HCID 86612599, compound

Participants

Reaction Conditions

Reaction Steps

To a stirring solution of 250 mg (1.17 mmol) of (5-(benzyloxy)pyridin-3-yl)methanol in 8 mL of toluene was added 310 μL (1.44 mmol) of DPPA. The mixture was cooled to 0° C. and 210 μL (1.44 mmol) of 1,8-diazabicyclo[5.4.0]-undec-7-ene] (DBU) was added. The ice bath was removed, and stirring was continued with wanning to room temperature. After about 20 h, the solution was diluted with EtOAc, and 1N HCl was added to a pH between 7 and 8. The organic layer was washed with water (2×15 mL) and brine (15 mL) and dried over Na2SO4. After filtration and concentration, the crude product was purified by flash silica gel chromatography (56-60% EtOAc/hexanes) to give 181 mg (65% yield) of the azide as a colorless oil.

Provenance & Evidence