Water → HCID 178429693, compound

Participants

Reaction Steps

A solution of 4,5-bismethanesulfonyl-2-methylbenzoyl chloride, prepared as described in 2.1., in 5 l of DMF is added dropwise at 12° to the guanidine solution prepared as described in 2.2. The reaction mixture is stirred at 20° for 5 hours, and 45 l of cold water (0-50) are added slowly. The deposited crystals are filtered off and rinsed with ice-water, acetonitrile and diethyl ether. The crude crystals are dissolved in 315 l of hot acetonitrile/water (20:1). The solution is treated with 200 g of activated carbon, filtered and cooled to 0°, giving N-(4,5-bismethanesulfonyl-2-methylbenzoyl)guanidine as the acetonitrile adduct in a yield of 64.8%; m.p. 233-2340 °.

Provenance & Evidence