3-Amino-1-propanol → HCID 11340964, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of powdered 5-[bis(2-bromoethyl)amino]-2,4-dinitrobenzoic acid (2) (1.10 g, 2.49 mmol) in benzene (170 mL) was treated at 20° C. with oxalyl bromide (1.10 mL, 11.7 mmol) and DMF (2 drops). The mixture was stirred at 20° C. for 2 h, then concentrated under reduced pressure, and re-evaporated to dryness in the presence of benzene under high vacuum. The resulting acid bromide was dissolved in Me2CO (20 mL) and the solution was treated at −5° C. with a cold solution of 3-amino-1-propanol (0.39 g, 5.19 mmol) in water (10 mL). The mixture was shaken at room temperature for 5 min, then diluted with water and extracted with EtOAc (2×). The organic extract was worked up and the resulting residue was chromatographed on silica gel, eluting with EtOAc, to give IIa-8 (1.06 g, 85%): mp (EtOAc/i-Pr2O) 85-86° C.; 1H NMR [(CD3)2SO] δ 8.64 (t, J=5.6 Hz, 1 H, CONH), 8.53 (s, 1 H, H-3), 7.41 (s, 1 H, H-6), 3.77-3.64 (m, 8 H, N(CH2CH2Cl)2), 4.46 (br s, 1 H, OH), 3.49 (t, J=6.3 Hz, 2 H, CH2OH), 3.33-3.25 (m, partially obscured, 2 H, CONHCH2), 1.68 (pent, J=6.72 Hz, 2 H, CH2CH2CH2). Anal. (C14Hl18Br2N4O6) C, H, N, Br.

Provenance & Evidence