Reacción #1955489

Ecuación de reacción

4-(4-bromo-thiophen-2-ylmethyl)-morpholine

4-(4-Bromo-thiophen-2-ylmethyl)-morpholine

bis(pinacolato)diboron

KOAc

4-amino-2-bromo-thieno[3,2-c]pyridine-7-carboxylic acid amide

Na2CO3

→

66

Rendimiento 83.3%

4-Amino-2-morpholin-4-ylmethyl-thieno[3,2-c]pyridine-7-carboxylic acid amide

Rendimiento 83.3%

Disolventes

DMF

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.ADDITIONwas added
2. 2
   Otrodegassed DMF (5 mL)
3. 3
   Temperaturacooled down to room temperature
4. 4
   TemperaturaThe resulting mixture was heated at 90 0 C for 1.5 h
5. 5
   OtroThe solvent was then removed via vacuum
6. 6
   workup.DISSOLUTIONthe residue was dissolved in DMSO (4.0 mL)
7. 7
   Otrothe mixture purified by reverse phase preparative HPLC

Procedimiento

To a mixture of 4-(4-bromo-thiophen-2-ylmethyl)-morpholine 64 (173 mg, 0.66 mmol), bis(pinacolato)diboron (352 mg, 1.39 mmol.), Pd(PPh3)4 (76 mg, 0.07 mmol) and KOAc (194 mg, 2.0 mmol) was added degassed DMF (5 mL). The reaction mixture was heated at 120° C. under N2 for 2 h and then cooled down to room temperature. A solution of 4-amino-2-bromo-thieno[3,2-c]pyridine-7-carboxylic acid amide 17 (150 mg, 0.55 mmol), Pd(PPh3)4 (69 mg, 0.06 mmol) and Na2CO3 (1.0 mL of a 2M aqueous solution, 3.3 mmol) in DMF (2.0 mL) was added. The resulting mixture was heated at 90 0 C for 1.5 h. The solvent was then removed via vacuum, the residue was dissolved in DMSO (4.0 mL) and the mixture purified by reverse phase preparative HPLC to give 66 (134 mg). 1H NMR (400 MHz, CDCl3) δ, 3.12 (m, 2H), 3.32 (m, 2H), 3.82 (m, 2H), 3.95 (m, 2H), 4.62 (s, 2H), 7.75 (s, 1H), 7.81 (br, 1H), 8.09 (s, 1H), 8.34 (s, 1H), 8.38 (br, 1H), 8.56 (s, 1H), 9.19 (br, 1H), 11.73 (br, 1H). MS (EI) m/z (M+H+) 375.

Fuente