Methyl iodide → HCID 9948559, compound

Participants

Reaction Steps

To solution of 6,6-dimethyl-3-methylthio-1-(tetrazol-5-yl)-4,5,6,7-tetrahydrobenzo[c]thiophen-4-one (62 mg, 0.21 mmol) in DMF (5 mL) containing triethylamine (58 μL, 0.42 mmol) was added iodomethane (13 μL, 0.21 mmol). After stirring for 1 h more iodomethane (39 μL, 0.63 mmol) was added and stirring continued overnight. Ethyl acetate (20 ml) and water (20 mL) were added and the organic layer separated, dried (Na2SO4) and evaporated. The residue was triturated with CH2Cl2:EtOAc (1:1) and the undissolved solid (26 mg; 0.08 mmol) collected by filtration and washed with EtOAc. The filtrate was chromatographed on silica gel, eluting with petrol:EtOAc (2:) to give the title compound (10 mg, 0.03 mmol) as a tan solid. Total mass=36 mg (56%), mp 233-235° C. Found C, 50.26; H, 5.23; N, 17.94%. C13H16N4S2O requires: C,50.63; H, 5.23; N, 18.17%. 1HNMR (250 MHz, CDCl3) δ 1.10 (6H, s), 2.45 (2H, s), 2.65 (3H, s), 3.11 (2H, s), 4.40 (3H, s). MS (ES+) 309 (M+1).

Provenance & Evidence