699-03-6, A common heterocyclic compound, 699-03-6, name is 1-(4-Bromophenyl)-N-methylmethanamine, molecular formula is C8H10BrN, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
A solution of 4-bromo-N-methylbenzylamine (199 mg,1.00 mmol), 3-pyridylboroxine (163 mg, 0.518 mmol), sodium carbonate (2 M, 4mL) and tetrakis(triphenylphosphine)-palladium(0) (30 mg, 0.026 mmol) in 1,4-dioxane (50 mL) was refluxed for 18 h. The solvent was eliminated under reduced pressure and the crude material was dissolved in a mixture of CH2Cl2 and CH3OH (1:1, 10 mL) and filtered through celite. After evaporation of the solvent, the crude material was purified by flash column chromatography (hexanes: ethyl acetate 6:4 and 1 % NEt3) to afford 1 as yellow oil (165 mg, 83 %); 1HNMR (CD2Cl2, 500 MHz): delta = 8.83 ppm (dd, J = 2.4 and 0.7 Hz, 1H), 8.54 (dd, J = 4.8 and 1.6 Hz, 1H), 7.89 (ddd, J = 7.9, 2.3 and 1.7 Hz, 1H), 7.58-7.56(m, 2H), 7.45-7.43 (m, 2H), 7.35 (ddd, J= 7.9, 4.8 Hz and 0.8 Hz, 1H), 3.78 (s, 2H), 2.43 (s, 3H), 1.64 (s, 1H); 13CNMR (125 MHz, CD2Cl2): delta = 148.9 ppm, 148.8 141.2, 137.0,136.9, 134.6, 129.4, 127.5, 124.1, 56.1, 36.3; IR (NaCl): nu = 3300 cm-1, 3028, 2933, 2844,2790, 2360, 1918, 1684, 1653, 1577, 1559, 1517, 1474, 1429, 1396, 1354, 1188,1129, 1103, 1024, 1001, 848, 796, 711; MS (CI, CH5+): m/z (%) = 199 (100) [M+H]+,168 (20), MS (EI, 70 eV): m/z (%):198 (100) [M]+, 168 (66), 156 (40); HR-MS (EI, 70 eV): m/z =198.11338 [M]+: calcd for C13H14N2:198.11570.
The synthetic route of 699-03-6 has been constantly updated, and we look forward to future research findings.
Reference:
Article; Keller, Marco; Wolfgardt, Annette; Mueller, Christoph; Wilcken, Rainer; Boeckler, Frank M.; Oliaro-Bosso, Simonetta; Ferrante, Terenzio; Balliano, Gianni; Bracher, Franz; European Journal of Medicinal Chemistry; vol. 109; (2016); p. 13 – 22;,
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