Water → HCID 10527426, compound

Participants

Reaction Steps

A solution of 2.5 g of 4-(aminomethyl)-1-[[2-(diethylamino)ethyl]amino]-thioxanthen-9-one (prepared by the method described in Example 4) in 30 mL of pyridine was cooled in an ice bath for 15 min and 0.95 g of ethanesulfonyl chloride in 5 mL of pyridine was added rapidly dropwise and the reaction mixture was stirred at room temperature for 1 h. The mixture was poured into 75 mL of water containing 0.75 g of NaOH, extracted into chloroform, the organic layer was washed with water (2x) and brine, and dried over sodium sulfate. The mixture was concentrated in vacuo and the residue was stirred in ether and dried (40° C./0.1 mm) to afford 1.7 g of N-[[1-[[2-(diethylamino)ethyl]amino]-9-oxothioxanthen-4-yl]methyl]ethanesulfonamide, amide, m.p. 105° C. (dec.). The sulfonamide was dissolved in methanol and treated with methanesulfonic acid in methanol to afford 1.61 g (42%) of the methanesulfonate salt, m.p. 135° C. (dec.).

Provenance & Evidence