Sodium Azide → 3-Azido-2,2-bis(3-bromophenyl)propyl methanesulfonate

Temperatur

110 °C

To a solution of 2,2-bis(3-bromophenyl)propane-1,3-diyl dimethanesulfonate (3.6 g, 6.64 mmol) in DMPU (25 mL, 207 mmol) under N2 was added NaN3 (0.52 g, 7.97 mmol) with stirring. The mixture was heated to 110° C. for 5 h. After cooling to room temperature, the reaction mixture was diluted with EtOAc (100 mL), and washed with water (30 mL×2) and brine (25 mL), dried and concentrated. The residue was purified by column chromatography (on silica gel, eluent with Petroleum ether: EtOAc=3:1) to afford 1.3 g of the title compound (2.66 mmol, 40%). LC/MS: [M+18]=507. 1HNMR (CDCl3), 400 MHz: δ 2.83 (s, 3H), 4.07 (s, 2H), 4.77 (s, 2H), 7.07-7.09 (m, 2H), 7.21-7.31 (m, 4H), 7.44-7.46 (m, 2H).

1. temperatureAfter cooling to room temperature
2. washwashed with water (30 mL×2) and brine (25 mL)
3. customdried
4. concentrationconcentrated
5. customThe residue was purified by column chromatography (on silica gel, eluent with Petroleum ether: EtOAc=3:1)

ORD-Eintrag

ord-aa087781c5604b5b8b70023646f295da

Quelldatensatz

uspto-grants-2015_01

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08937150B2