Diisopropylethylamine → 4-bromo-2-methyl-N-(2-morpholin-4-yl-ethyl)benzene-sulfonamide

Participants

Reaction Conditions

Reaction Steps

A mixture of 4-bromo-2-methylbenzene sulfonyl chloride (700 mg, 2.6 mmol), 4-(2-aminoethyl)morpholine (372 mg, 2.86 mmol, 1.1 eq), and N,N-diisopropylethylamine (1.0 mL, 5.71 mmol, 2.2 eq) in anhydrous tetrahydrofuran (13 mL, 0.2 M) was stirred at 40° C. under nitrogen for 18 h. Solvent was removed at reduced pressure and the residue was partitioned between EtOAc and water. The organic phase was washed with water and brine, dried over Na2SO4, and concentrated at reduced pressure. The residue was purified by MPLC (eluting with 50% to 75% EtOAc/hexane) to give 939 mg (99%) of the desired product as a white solid. 1H-NMR (DMSO-d6) δ 7.73 (d, J=8.4 Hz, 1H), 7.68 (broad s, 1H), 7.65 (dd, J=2.1, 0.6 Hz, 1H), 7.55 (ddd, J=7.3, 2.1, 0.6 Hz, 1H), 3.41 (t, J=4.5 Hz, 4H), 2.88 (t, J=6.3 Hz, 2H), 2.56 (s, 3H), 2.19 (t, =6.6 Hz, 2H), 2.16 to 2.12 (m, 4H); MS LC-MS [M+H]+=363 & 365, RT=1.90 min.

Provenance & Evidence