2-bromo-N,N-diethylbenzenesulfonamide

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 0.438 g of N,N-diethylbromobenzenesulfonamide, 0.42 g of bis-(pinacolato)diboron, 0.025 g of 1,1′-bis-(diphenylphosphino)-ferrocene, 0.033 g of [1,1′-bis(diphenyl-phosphino)ferrocene]palladium-dichloride (complex with CH2Cl2), 0.442 g of potassium acetate in 6 ml of degassed dioxane are heated to 90° C. in a sealed tube under N2 for 7 hours. To the resulting mixture 10 ml of degassed dioxane, 0.371 g of 2-[2-(4-methoxypyridin-2-yl)ethyl]-6-iodo-3H-imidazo[4,5-b]pyridine (starting material A1), 0.113 g of tetrakis(triphenylphos-phine)-palladium(0) and a solution of 0.27 g of potassium carbonate and 0.083 g of lithium chloride in 10 ml of degassed water are added under N2. The mixture is heated to reflux under N2 for 16 hours and, after cooling, addition of water and adjusting the pH to 7, it is extracted three times with dichloromethane. The combined organic phases are dried over sodium sulfate, concentrated and the residue is chromatographed on a silica gel column (dichloromethane/methanol 30-25:1). Concentration of the chromatographically pure fractions and crystallisation from ethylacetate gives 0.155 g of the title compound as a solid of m.p. 127-129° C. The mass spectrum shows the molecular peak MH+ at 466.3 Da. The mixture is heated to reflux under N2 for 16 hours after cooling is extracted three times with dichloromethane The combined organic phases are dried over sodium sulfate concentrated the residue is chromatographed on a silica gel column (dichloromethane/methanol 30-25:1) Concentration of the chromatographically pure fractions and crystallisation from ethylacetate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared using conditions analogous to those described in Example 1 using (4-acetyl-3-fluorophenyl)boronic acid and 2-bromo-N,N-diethylbenzenesulfonamide. MS (ESI): mass calcd. for C18H20FNO3S, 349.11; m/z found, 350.1 [M+H]+. 1H NMR (500 MHz, CDCl3) δ 8.05 (dd, J=7.9, 1.2, 1H), 7.92 (m, 1H), 7.61-7.56 (m, 1H), 7.55-7.49 (m, 1H), 7.29-7.27 (m, 2H), 7.25-7.24 (m, 1H), 2.95 (q, J=7.1, 4H), 2.69 (d, J=4.9, 3H), 1.01 (t, J=7.1, 6H).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared in a manner similar to that described in Example 444 using 7-(2-fluoro-4-(4,4,5,5-tetramethyl-1,3-dioxolan-2-yl)phenyl)-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine and 2-bromo-N,N-diethylbenzenesulfonamide. MS (ESI): mass calcd. for C23H24FN3O3S, 441.15; m/z found, 442.2 [M+H]+. 1H NMR (400 MHz, CD3OD) δ 8.03-8.00 (m, 1H), 7.82 (d, J=1.0, 1H), 7.73-7.65 (m, 2H), 7.62-7.55 (m, 2H), 7.40-7.36 (m, 1H), 7.31 (s, 1H), 7.30-7.28 (m, 1H), 4.39-4.35 (m, 2H), 3.74-3.70 (m, 2H), 2.99 (q, J=7.1, 4H), 1.01 (t, J=7.1, 6H).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared in a manner similar to that described in Example 448 using 5-(2-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-pyrazin-2-amine and 2-bromo-N,N-diethylbenzenesulfonamide. MS (ESI): mass calcd. for C20H21FN4O2S, 400.14; m/z found, 401.2 [M+H]+. 1H NMR (400 MHz, CD3OD) δ 8.37 (s, 1H), 8.29 (d, J=1.4, 1H), 8.08-8.04 (m, 1H), 8.0-7.94 (m, 1H), 7.70-7.64 (m, 1H), 7.61-7.55 (m, 1H), 7.41-7.36 (m, 1H), 7.32-7.25 (m, 2H), 2.96 (q, J=7.1, 4H), 1.00 (t, J=7.1, 6H).