Reaktion #1013399

Reaktionsgleichung

trimethylacetyl chloride

pyridine

2-(1-chloro-3-methylnaphthalen-2-yl)-2-(1,1,1-trifluoro-2-methylpropan-2-yloxy)ethanol

→

2-(1-chloro-3-methylnaphthalen-2-yl)-2-(1,1,1-trifluoro-2-methylpropan-2-yloxy)ethyl pivalate

Lösungsmittel

CH2Cl2

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe mixture was quenched with water
2. 2
   Einengenconcentrated
3. 3
   Sonstigepurified by flash column chromatography (silica gel, 0 to 20% ethyl acetate/hexanes)

Vorschrift

To a stirred solution of trimethylacetyl chloride (0.17 mL, 1.36 mmol) and 4-(Dimethylamino)pyridine (55 mg, 0.45 mmol) in pyridine (2.4 mL, 29.48 mmol), 2-(1-chloro-3-methylnaphthalen-2-yl)-2-(1,1,1-trifluoro-2-methylpropan-2-yloxy)ethanol (157 mg, 0.45 mmol) in CH2Cl2 (2.4 mL) was added at 0° C. The reaction mixture was allowed to warm to room temperature overnight. The mixture was quenched with water and concentrated and purified by flash column chromatography (silica gel, 0 to 20% ethyl acetate/hexanes) to give 2-(1-chloro-3-methylnaphthalen-2-yl)-2-(1,1,1-trifluoro-2-methylpropan-2-yloxy)ethyl pivalate. 1H-NMR: 400 MHz, (CDCl3) δ 8.26 (d, J=8.4 Hz, 1H), 7.73 (d, J=8.0 Hz, 1H), 7.58-7.48 (m, 3H), 6.05 (dd, J=8.4, 5.2 Hz, 1H), 4.50 (dd, J=11.2, 8.4 Hz, 1H), 4.21 (dd, J=11.2, 4.8 Hz, 1H), 2.73 (s, 3H), 1.43 (s, 3H), 1.19 (s, 3H), 1.16 (s, 9H).

Quelle