تفاعل #61936
ord-ceebbeaee2e2449ba06c037d9ad362db
معادلة التفاعل
الكواشف
المذيبات
ظروف التفاعل
المعالجة
- 1أخرىThe reaction mixture was dried under reduced pressure
- 2أخرىpurified by RP-HPLC
الإجراء التجريبي
{1-Cyano-3-ethyl-5-[6-methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-pent-3-enyl}-phosphonic acid diethyl ester (19.5 mg, 0.035 mmol) was dissolved in a solution of 10% TFA/CH2Cl2 (2 mL) and stirred at room temperature for 10 minutes. The reaction mixture was dried under reduced pressure and purified by RP-HPLC to provide 9.5 mg (61%) of the desired product. This material was dissolved in DMF (0.5 mL) and DCM (0.5 mL) and TMSBr (27 μL, 0.2 mmol) and 2,6-lutidine (23 μL, 0.2 mmol) were added. The reaction solution was allowed stir at room temperature overnight before quenching with MeOH. The reaction mixture was dried under reduced pressure and the residue was purified by RP HPLC using a C18 column with a gradient of H2O, 0.1% TFA-acetonitrile, 0.1% TFA to provide 5.1 mg (65%) of the desired product as a white solid. 1H NMR (300 MHz, CD3OD) δ 1.10 (t,3H), 2.16 (s, 3H), 2.23-2.52 (m, 3H), 2.67 (m,1H), 3.05-3.20 (m, 1H), 3.48 (d, J=7.2, 2H), 3.81 (s, 3H), 5.26 (s, 2H), 5.43 (t, J=7.2 Hz, 1H) ppm; 31p (121.4 MHz, CD3OD) δ 14.18 ppm; MS (m/z) 394 [M−H]−, 396 [M+H]+.