Triethylamine → HCID 10760500, compound

Participants

Reaction Steps

1,2-Bis(methylsulfonyl)-2-(2-bromoethoxycarbonyl)-1-methylhydrazine (compound 8) was synthesized as follows: Triethylamine (1.45 g, 0.014 mol) was added in portions to a stirred solution of 1,2-bis(methylsulfonyl)-1-methylhydrazine (2.02 g, 0.01 mol) and 2-bromoethyl chloroformate (3.49 g, 0.019 mol) in acetone (100 ml) over a period of 15 min. The reaction mixture was stirred for an additional 18 hr, filtered, and the filtrate evaporated to dryness in vacuo. The residue was taken up in chloroform (100 ml) and washed with water (3×20 ml). The chloroform layer was dried over anhydrous magnesium sulfate, filtered, and the filtrate evaporated to dryness. The residue was triturated with petroleum ether until a solid separated. The solid was filtered and recrystallized from ethanol (1.52 g, 43.0%). Mp was approximately 81-82° C. 1H NMR (CDCl3): δ 4.7 and 3.6 (4H, 2t, CH2CH2Br), 3.5, 3.3 and 3.1 (9H, 3s, 2CH3SO2 and NCH3).

Provenance & Evidence