反应详情

温度

-5 °C

Pentyl[2′-(1-trityl-1H-tetrazol-5-yl)biphenyl-4-ylmethyl]amine (2.9 g, 5.1 mmol) was dissolved in a mixture of toluene (30 mL), water (12 mL) and NaOH (5 equiv). The mixture was cooled to −5° C., and a solution of phosgene in toluene (20% w/w, 3 equiv) was added portionwise. The mixture was stirred vigorously for 0.75 hour at −5° C. The layers were then allowed to separate, the organic layer dried over Na2SO4, and the solvent evaporated to afford the title compound (3.2 g, 5.1 mmol), which was used without further purification.

1. customto separate
2. dry with materialthe organic layer dried over Na2SO4
3. customthe solvent evaporated