Oxalyl chloride → HCID 178484067, Verbindung

Beteiligte Stoffe

Reaktionsschritte

A solution of 0.50 g (1.52 mmol) of trans-4-{[(5-bromo-pyrimidin-2-yl)-methyl-amino]-methyl}-cyclohexanecarboxylic acid in 4.5 mL of CH2Cl2 was treated at RT with 1 drop of DMF followed by 0.14 mL (1.68 mmol, 1.1 eq) of oxalyl chloride within 5 min, and stirring was continued for 90 min. The solution was evaporated, the residue was redissolved in CH2Cl2 and added dropwise to a solution of 2.14 mL (30.47 mmol, 20 eq) of cyclopropylamine in 3 mL of CH2Cl2 at 0° C. The reaction was warmed to RT and left for 3 h, then partitioned between Et2O (×3)/aqueous 10% NaHCO3, washed once with aqueous 10% NaHCO3, dried over Na2SO4 and evaporated to yield 0.55g (99%) of trans-4-{[(5-bromo-pyrimidin-2-yl)-methyl-amino]-methyl}-cyclohexanecarboxylic acid cyclopropylamide, MS: 367 (MH+, 1Br).

Herkunft & Nachweise