반응 #69856

반응 방정식

2-(2-(2H-1,2,3-triazol-2-yl)benzyl)-2,9-diazaspiro[5.5]undecan-1-one

diisopropylethylamine

2-chloroquinoxaline

→

title compound

수율 66.0%

2-(2-(2H-1,2,3-triazol-2-yl)benzyl)-9-(quinoxalin-2-yl)-2,9-diazaspiro[5.5]undecan-1-one

수율 66.0%

용매

acetonitrile

반응 조건

후처리

1. 1
   온도The reaction mixture was cooled to rt
2. 2
   농축concentrated under reduced pressure
3. 3
   기타The crude mixture was purified by flash-column chromatography over silicagel (eluent: gradient 10%-100% ethyl acetate/heptane)

실험 절차

To a stirred solution of 2-(2-(2H-1,2,3-triazol-2-yl)benzyl)-2,9-diazaspiro[5.5]undecan-1-one (TFA salt) (200 mg, 0.354 mmol, contains 2.0 moleq. TFA) and diisopropylethylamine (0.64 mL, 3.61 mmol) in acetonitrile (1 mL) was added 2-chloroquinoxaline [1448-87-9] (121 mg, 0.72 mmol). The mixture was heated at 120° C. for 40 min under microwave conditions. The reaction mixture was cooled to rt and concentrated under reduced pressure. The crude mixture was purified by flash-column chromatography over silicagel (eluent: gradient 10%-100% ethyl acetate/heptane) to yield the title compound (106 mg, 65%). [1H NMR (400 MHz, DMSO-d6) ♀ ppm 8.81 (s, 1H), 8.11 (s, 2H), 7.80 (d, 1H), 7.59-7.63 (m, 1H), 7.56-7.59 (m, 2H), 7.44-7.55 (m, 2H), 7.33-7.40 (m, 1H), 7.24-7.29 (m, 1H), 4.54 (br. s, 2H), 4.19-4.29 (m, 2H), 3.39-3.49 (m, 2H), 3.13 (t, 2H), 1.99-2.10 (m, 2H), 1.84-1.92 (m, 2H), 1.73-1.83 (m, 2H), 1.54-1.65 (m, 2H); LCMS RtA=1.16, [M+H]+=454.4].

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