alpha-Bromo-2-nitrotoluene → HCID 54074348, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of piperidine-1,4-dicarboxylic acid 1-tert-butyl ester 4-ethyl ester (8.23 g, 0.032 mol) in tetrahydrofuran (85 mL) was slowly added a solution of sodium bis(trimethylsilyl)amide (44 mL, 0.044 mol). After the resulting mixture had been stirred at −78° C. for 1 h, a solution of 2-nitrobenzyl bromide.(8.21 g, 0.038 mol) was added. The reaction mixture was allowed to warm up to room temperature and was stirred overnight. It was then concentrated and the residue was partitioned between water and ethyl acetate. The organic extract was washed with brine, dried over anhydrous magnesium sulfate, filtered, and concentrated under vacuum. The final product was purified from the complex reaction mixture by way of column chromatography on silica gel (eluent-hexanes-ethyl acetate 4:1) to give the desired product (1.61 g, 13%) as brown oil. Mass spec.: 415.38 (M+Na)+.

Provenance & Evidence