Water → HCID 66927322, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of N-(2-aminoethyl)-5-bromothiophene-2-sulfonamide (2.5 g, 8.77 mmol, 1.0 eq) and DIPEA (3.4 g, 26.3 mmol, 3.0 eq) in CH2Cl2 (100 mL) was stirred at 0° C., pivaloyl chloride (2.1 g, 17.5 mmol, 2 equiv.) was added drop-wise. Then, the mixture was stirred at 0° C. for 0.5 h. Water was added and the reaction was extracted with EA (3×80 ml). The combined organic layers were dried (Na2SO4), filtered, evaporated and purified by silica gel chromatography (PE/EA=10:1 as eluant) to afford N-(2-(5-bromothiophene-2-sulfonamido)ethyl)pivalamide (3.07 g, 95.0%). LC-MS (m/z)=368.9 [M+H]+.

Provenance & Evidence