Chlorosulfonic acid → Ethyl 2-(4-(chlorosulfonyl)-2-ethylphenoxy)acetate

関与物質

反応条件

反応手順

To a 250 ml round-bottom flask containing chlorosulfonic acid (30 ml) cooled to 0° C. was added ethyl (2-ethylphenoxy)acetate (7.2 g, 34.6 mmoles) dropwise. Once the addition was complete the ice-bath was removed and the reaction was allowed to warm to room temperature at which the reaction was stirred for 3 hours. The reaction was then slowly added to ice and, once the excess chlorosulfonic acid was quenched, the mixture was diluted with CH2Cl2 (200 ml). The phases were separated and the aqueous fraction was washed with CH2Cl2 twice. The combined organic fractions were dried over Na2SO4 and filtered and concentrated in vacuo to yield 7.2 g (70%) of crude product. The crude product was used with no purification.

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