Water → 1-{[3-(Methyloxy)phenyl]methyl}propyl methanesulfonate

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Reaction Steps

1-[3-(Methyloxy)phenyl]-2-butanol (51) (3.50 g, 19.4 mmol) was dissolved in CH2Cl2 (90 mL). To this solution was added Et3N (5.4 mL, 38.8 mmol) followed by catalytic amount of N,N-dimethylaminopyridine (DMAP). The mixture was cooled in an ice bath, methanesulfonyl chloride (2.3 mL, 29.1 mmol) was added dropwise. The reaction mixture was allowed to warm up to room temperature and stirred at room temperature overnight. Water was added to the mixture, CH2Cl2 layer was separated. The aqueous layer was further extracted with CH2Cl2 (50 mL). The extracts were combined and washed with brine, (Na2SO4), filtered, and the filtrate was concentrated to give the crude product as a brown oil. The crude product was purified by flash chromatography over SiO2 with hexanes:EtOAc (4:1) to give 4.66 g (94%) of the title compound (52) as a yellow oil, which solidified upon freezing. 1H NMR (400 MHz, CDCl3): δ 1.03 (t, J=7.5 Hz, 3H), 1.70-1.85 (m, 2H), 2.53 (s, 3H), 2.94 (d, J=6.7 Hz, 2H), 3.80 (s, 3H), 4.70-4.80 (m, 1H), 6.75-6.85 (m, 3H), 7.20-7.25 (m, 1H).

Provenance & Evidence