Allyl bromide → HCID 22595722, compound

Participants

Reaction Steps

3,4-Dihydro-3-(1-methylethyl)-6-methylthio-1H-2,1,3-benzothiadiazine-2,2-dioxide (10 g, 0.0367 mol) was added to a suspension of sodium hydride (1.61 g, 60% dispersion) in dry dimethylformamide (200 ml) at room temperature under a nitrogen atmosphere. The pale grey suspension was stirred for ten mins, and then allyl bromide (3.49 ml, 0.0404 mol) was added in one portion. The reaction mixture was stirred at 80° C. for 3 hr. The mixture was then concentrated in vacuo to yield a brown residue. The residue was dissolved in ethyl acetate (50 ml) and washed with water (2×50 ml). The organic layer was then dried (MgSO4) and concentrated in vacuo to afford 3,4-dihydro-3-(1-methylethyl)-6-methylthio-1-(prop-2-en-1-yl)-1H-2,1,3-benzothiadiazine-2,2-dioxide. δ (1H NMR, DMSO, ppm): 1.1 (6H, d), 2.5 (3H, s), 4.1 (1H, m), 4.5 (2H, d), 4.7 (2H, s), 5.3 (1H, dd), 5.4 (1H, dd), 6.0 (1H, m), 7.0 (1H, d), 7.3 (2H, m).

Provenance & Evidence