Reacción #502113

Ecuación de reacción

1,1,1-tris(hydroxymethyl)ethane

(2S)-2-(6-methoxy(2-naphthyl))propanoic acid

1-(3-(dimethylamino)propyl)-3-ethylcarbodiimide hydrochloride

triethylamine

→

title compound

Rendimiento 66.0%

3-Hydroxy-2-(hydroxymethyl)-2-methylpropyl(2S)-2-(6-methoxy(2-naphthyl))-propanoate

Rendimiento 66.0%

Disolventes

acetonitrile

Condiciones de reacción

Tratamiento posterior

1. 1
   Filtraciónfiltered
2. 2
   Concentraciónthe filtrate was concentrated to dryness
3. 3
   workup.ADDITIONThe residue was diluted with EtOAc
4. 4
   Lavadowashed with 1N HCl (2×), saturated NaHCO3, and brine
5. 5
   Secadodried over Na2SO4
6. 6
   Filtraciónfiltered
7. 7
   Concentraciónconcentrated
8. 8
   OtroThe resulting material was purified by crystallization (2×) from EtOAc/Hexanes (1:3 v:v)

Procedimiento

To a stirred solution of 1,1,1-tris(hydroxymethyl)ethane (13.1 g, 109 mmol), (2S)-2-(6-methoxy(2-naphthyl))propanoic acid (naproxen, 5.00 g, 21.7 mmol), 1-(3-(dimethylamino)propyl)-3-ethylcarbodiimide hydrochloride (4.80 g, 25 mmol), and N,N-dimethylaminopyridine (DMAP, 20 mg, catalytic amount) in acetonitrile (200 mL) was added triethylamine (4.2 mL, 30 mmol). The reaction mixture was stirred at ambient temperature for 25 hours, filtered, and the filtrate was concentrated to dryness. The residue was diluted with EtOAc, washed with 1N HCl (2×), saturated NaHCO3, and brine, dried over Na2SO4, filtered, and concentrated. The resulting material was purified by crystallization (2×) from EtOAc/Hexanes (1:3 v:v) to give the title compound (4.72 g, 66% yield) as white flakes. Mp 105° C. 1H NMR (300 MHz, CDCl3) δ 7.72 (d, J=2.0 Hz, 1H), 7.69 (d, J=2.5 Hz, 1H), 7.66 (s, 1H), 7.39 (dd, J=8.5, 1.7 Hz, 1H), 7.17-7.10 (m, 2H), 4.25 (d, J=11.3 Hz, 1H), 4.09 (d, J=11.3 Hz, 1H), 3.90 (s, 3H), 3.88 (q, J=7.1 Hz, 1H), 3.46-3.25 (m, 4H), 2.65-2.55 (m, 2H), 1.60 (d, J=7.1 Hz, 3H), 0.67 (s, 3H). 13C NMR (75 MHz, CDCl3) δ175.8, 157.7, 135.3, 133.8, 129.2, 128.9, 127.3, 126.0, 119.2, 105.6, 67.7. 67.5, 66.8, 55.3, 45.6, 40.9, 18.1, 16.7. LRMS (API-TIS) m/z 350.2 ((M+NH4)+).

Fuente