반응 #1977013
ord-f4d3692114ac428f9b8c5737c3052975
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8-Bromo-6-trifluoromethyl-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine was prepared from 3-bromo-5-trifluoromethyl-pyridin-2-ylamine, ethoxycarbonylisothiocyanate, and hydroxylamine hydrochloride in a manner analogous to Steps 2a-b. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 9.24 (s, 1H), 8.08 (s, 1H), 6.62 (bs, 2H). MS=282.9 (MH)+. 102b) 8-(4-Methanesulfonyl-phenyl)-6-trifluoromethyl-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine was prepared from 8-bromo-6-trifluoromethyl-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine and (4-methylsulfonylphenyl)boronic acid in a manner analogous to Step 2c to afford a white solid (67%) MP=236-237° C. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 9.28 (s, 1H), 8.42 (d, J=7.8 Hz, 2H), 8.07 (s, 1H), 8.06 (d, J=7.8 Hz, 2H), 6.58 (bs, 2H), 3.29 (s, 3H). MS=356.33 (MH)+. 102c) [8-(4-Methanesulfonyl-phenyl)-6-trifluoromethyl-[1,2,4]triazolo[1,5-a]pyridin-2-yl]-[3-(4-methyl-piperazin-1-yl)-phenyl]-amine was prepared from 8-(4-methanesulfonyl-phenyl)-6-trifluoromethyl-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine and 1-(3-bromo-phenyl)-4-methyl-piperazine in a manner analogous to Step 2d and was isolated as a yellow solid (2% yield). 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 8.84 (s, 1H), 8.28 (d, J=8.3 Hz, 2H), 8.14 (d, J=7.2 Hz, 2H), 7.81 (s, 1H), 6.95 (m, 2H), 6.64 (d, 1H), 3.32 (bm, 4H), 3.14 (s, 3H), 2.67 (bm, 4H), 2.44 (s, 3H). MS=531.1 (MH)+.