Benzoyl Peroxide → HCID 66938894, compound

Participants

Reaction Steps

5-(2-Azidomethyl-4-chloro-phenyl)-1-trityl-1H-tetrazole: To 114A (4 g, 9.15 mmol) in chloroform (20 mL) was added NBS (1.711 g, 9.61 mmol) and benzoyl peroxide (30 mg, 0.124 mmol) and the reaction was heated at reflux overnight. Additional NBS and peroxide were added and the reaction was heated an addition 2 h. The reaction was cooled to rt, filtered, and purified by flash chromatography to give 5-(2-bromomethyl-4-chloro-phenyl)-1-trityl-1H-tetrazole (3.5 g, 74.1%). 1HNMR (400 MHz, CDCl3) δ: 4.78 (s, 2H), 7.04-7.14 (m, 5H), 7.24-7.35 (m, 11H), 7.40 (d, J=2.02 Hz, 1H), 8.06 (d, J=8.34 Hz, 1H). This intermediate (1.57 g, 3.04 mmol) and sodium azide (0.198 g, 3.04 mmol) in DMF (8 mL) were stirred for two days. The reaction was partitioned with EtOAc/water/brine and extracted with EtOAc. The combined organic layers were washed with water and brine, dried (MgSO4), and purified by flash chromatography to give 114B. LCMS m/z 195.2 (M+H—N3)+; 152.1 (M+H—N6).

Provenance & Evidence