Diethylamine → HCID 20500909, compound

Participants

Reaction Steps

14.6 g (0.2 mol) of diethylamine were slowly added dropwise to 33.4 g (0.1 mol) of 1,1,1,2-tetrachloro-3-(1,2,4-triazol-1-yl)-5,5-dimethyl-hexan-4-one (Example 3) in 150 ml of tetrahydrofuran at room temperature. The mixture was then subsequently stirred at 50°-60° C. for 3 hours. The diethylamine hydrochloride which had precipitated was filtered off and the filtrate was concentrated in vacuo. According to thin layer chromatography of the residue over silica gel 60 (Merck, particle size 0.063-0.200 mm) and with ether/hexane in the ratio 1:1 as the running agent, 1,1,1-trichloro-2-diethylamino-3-(1,2,4-triazol-1-yl)-5,5-dimethyl-hexan-4-one was obtained as the pure diastereomer of the A* form, as a yellow oil, in a yield of 8.9 g (24.1% of theory), and as the pure diastereomer of the B* form, of melting point 103°-110° C., in a yield of 6.4 g (19.4% of theory).

Provenance & Evidence