Reaktion #473420

Reaktionsgleichung

trans-{3-[4-amino-5-(2-phenylquinolin-7-yl)-pyrrolo[2,3-d]pyrimidin-7-yl]-cyclobutyl}-methanol

Ts2O

Ts2O

→

desired product

Toluene-4-sulfonic acid trans-3-[4-amino-5-(2-phenylquinolin-7-yl)pyrrolo[2,3-d]pyrimidin-7-yl]-cyclobutylmethyl ester

Lösungsmittel

CH2Cl2

water

NaHCO3

CH2Cl2

pyridine

CH2Cl2

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturcooled in a dry ice/acetone bath
2. 2
   workup.STIRRINGstirring at ambient temperature
3. 3
   workup.WAITwas continued for 4.5 h
4. 4
   workup.ADDITIONwere added
5. 5
   Sonstigethe layers were separated
6. 6
   Extraktionthe aqueous layer was extracted with CH2Cl2 (3×25 mL)
7. 7
   Waschenthe combined CH2Cl2 extracts were washed with water and brine
8. 8
   Trocknendried over MgSO4
9. 9
   FiltrationFiltration and concentration
10. 10
    workup.ADDITIONafter adding toluene (10 mL; to remove remaining pyridine as azeotrop)

Vorschrift

To a suspension of trans-{3-[4-amino-5-(2-phenylquinolin-7-yl)-pyrrolo[2,3-d]pyrimidin-7-yl]-cyclobutyl}-methanol (105.7 mg, 0.251 mmol) in CH2Cl2 (5 mL) and pyridine (1 mL), cooled in a dry ice/acetone bath, was added a solution of Ts2O (92 mg, 0.28 mmol) in CH2Cl2 (2 mL) over 5 min, then the reaction mixture was warmed up to ambient temperature and stirred for 16 h. More Ts2O (70 mg, 0.21 mmol) was added, and stirring at ambient temperature was continued for 4.5 h. The reaction solution was diluted with CH2Cl2 (25 mL), water and saturated NaHCO3 sol. were added, the layers were separated, the aqueous layer was extracted with CH2Cl2 (3×25 mL), and the combined CH2Cl2 extracts were washed with water and brine and dried over MgSO4. Filtration and concentration after adding toluene (10 mL; to remove remaining pyridine as azeotrop) gave the desired product. No purification before the next step. 1H NMR (CDCl3, 400 MHz) δ 2.43-2.51 (m, 2H), 2.47 (s, 2H), 2.67-2.86 (m, 3H), 4.22 (d, J=6.6 Hz, 2H), 5.19 (brs, 2H), 5.36 (quint, J=8.0 Hz, 1H), 7.29 (s, 1H), 7.37-7.41 (m, 2H), 7.46-7.51 (m, 1H), 7.52-7.58 (m, 2H), 7.68 (dd, J=1.8, 8.4 Hz, 1H), 7.83-7.87 (m, 2H), 7.92 (d, J=8.6 Hz, 1H), 7.93 (d, J=8.4 Hz, 1H), 8.17-8.22 (m, 2H), 8.25-8.29 (m, 2H), 8.33 (s, 1H). MS (ES+): m/z 576.1 (54) [MH+], 338.2 (10) [MH+-cyclobutene-CH2OTs]. HPLC: tR=2.8 min (OpenLynx, nonpolar—5 min).

Quelle