Reaktion #61255

Reaktionsgleichung

DMF

(2-{4-[6-methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-2-methyl-but-2-enylamino}-ethyl)-phosphonic acid diethyl ester

TMSBr

2,6-lutidine

→

product

Ausbeute 36.8%

{2-[4-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-methyl-but-2-enylamino]-ethyl}-phosphonic acid

Ausbeute 36.8%

Lösungsmittel

CH2Cl2

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe reaction mixture was purified by RP HPLC

Vorschrift

A solution of (2-{4-[6-methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-2-methyl-but-2-enylamino}-ethyl)-phosphonic acid diethyl ester (30 mg, 0.055 mmol), TMSBr (72 μL, 0.55 mmol), and 2,6-lutidine (64 μL, 0.55 mmol) was stirred in CH2Cl2 (1 mL) and DMF (0.5 mL) for 1 hour at ambient temperature. The reaction mixture was purified by RP HPLC using a C18 column with a gradient of H2O, 0.1% TFA-acetonitrile, 0.1% TFA to provide 7.8 mg of the product as a white solid. 1H NMR (300 MHz, CD3OD) δ 1.96 (s, 3H), 1.95-2.07 (m, 2H), 2.16 (s, 3H), 3.10-3.24 (m, 2H), 3.51 (d, 2H, J=7 Hz), 3.57 (s, 2H), 3.81 (s, 3H), 5.25 (s, 2H), 5.73 (t, 1H, J=7 Hz) ppm; 31P (121.4 MHz, CD3OD) δ 20.2 ppm; 19F NMR (282.6 MHz, CD3OD) δ-74.0 ppm; MS (m/z) 386.3 [M+H]+.

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