Triethylamine → HCID 67239447, compound

Participants

Reaction Steps

173 mg (0.5 mmol) of 2-chloro-4-(methylsulfonyl)benzoic acid and 191 mg (0.505 mmol) of N-(4-amino-1,2,5-oxadiazol-3-yl)acetamide are dissolved in 5 ml of dichloroethane at RT and treated with 0.071 ml (0.5 mmol) of triethylamine, 31 mg (0.25 mmol) of DMAP and 483 mg (0.76 mmol) of 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide (50% solution in THF). The reaction mixture is stirred for 24 h at RT and subsequently filtered through a glass frit. The residue is washed twice using in each case 1 ml of CH2Cl2. The filtrate is passed over a silica-gel-filled SPE cartridge and eluted twice using in each case 5 ml of a mixture of ethyl acetate/methyl tert-butyl ester (1:1). The organic phase is dried over Na2SO4 and evaporated. The residue is purified by preparative HPLC using acetonitrile/water. Yield 16 mg (9%).

Provenance & Evidence