1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride → N-(9-Amino-6-chloro-1,2,3,4-tetrahydro-acridin-3-yl-methyl)-2-[1,2]dithiolan-3-yl-acetamide

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Reaction Conditions

Reaction Steps

A solution of 16 (140 mg, 0.53 mmol) and [1,2]dithiolan-3-yl-acetic acid (Chen, Yaun-Shek and Lawton, Richard G. An efficient synthetic route to 2-(1,2-dithiolan-3-yl)acetic acid. Trisnorlipoic acid and amide derivatives. Tetrahedron Letters 1997, 38, 5785-5788) (90 mg, 0.55 mmol) in anhydrous DMF (5 mL), under N2, was cooled to 0° C. and then additioned with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDCI) (113 mg, 0.59 mmol); the reaction mixture was stirred at 0° C. for 15 min and then at room temperature for 2 h in the dark. Solvent was then evaporated, accurately avoiding heating up the mixture. An oily residue was obtained which was purified by gravity column. Elution with petroleum ether/CH2Cl2/MeOH/aqueous 30% ammonia solution (5:4:1:0.1) afforded 17 as a waxy solid: 40% yield; 1H NMR (200 MHz, CD3OD) δ 8.03 (d, J=9.2 Hz, 1H), 7.67 (d, J=2.2 Hz, 1H), 7.30 (dd, J=8.8, 2.2 Hz, 1H), 4.05 (m, 1H), 2.95-3.34 (m, 5H), 2.46-2.59 (m, 6H), 1.99-2.20 (m, 3H), 1.48-1.52 (m, 1H). Anal. Calculated for C19H22ClN3OS2: C, 55.93; H, 5.44; N, 10.30. Found: C, 56.01; H, 5.45; N, 10.11.

Provenance & Evidence