Ammonia → N-(2-Butyl-1-benzofuran-5-yl)methanesulfonamide

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Reaction Steps

100 g of 5-amino-2-butylbenzofuran, 192 ml of tetrahydrofuran and 96 ml of methyl tert-butyl ether are introduced into a round-bottomed flask. 59.35 g of methanesulfonyl chloride are added, at 20° C., followed by 43.23 g of 20% aqueous ammonia. 44.51 g of methanesulfonyl chloride are then introduced, followed by 86.47 g of 20% aqueous ammonia. 48 ml of water are then added, the medium is separated by settling and the organic phase is washed twice with 211 g of 10% aqueous sodium chloride solution. The medium is separated by settling and concentrated at 400° C. under vacuum, to give the desired compound in crude form (weight yield: 100%).

Provenance & Evidence