Trimethyl phosphite → Dimethyl[4-(phenylsulfonyl)benzyl]phosphonate

참여 물질

반응 단계

1-(Bromomethyl)-4-(phenylsulfonyl)benzene (Step 1, 10.1 g, 32.5 mmol) was heated to reflux in trimethylphosphite (40 mL) for 16 hours. The cooled reaction was azeotroped with xylene then purified by flash column chromatography on silica, eluting with ethyl acetate to give dimethyl [4-(phenylsulfonyl)benzyl]phosphonate (9.5 g, 86%). δH (360 MHz, CDCl3): 7.92–7.84 (4H, m), 7.55–7.39 (5H, m), 3.64 (6H, d, J=10.9 Hz), 3.16 (2H, d, J=21.6 Hz).

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