反应详情

1-Indanone (Aldrich) (5.0 g, 37.8 mmol) in toluene (25 cm3) was added dropwise, to a stirring solution of sodium hydride (Aldrich) (1.8 g, 45.4 mmol 60% w/w dispersion in oil), ethyl formate (Aldrich) (5.6 g, 75.6 mmol) and toluene (50 cm3), under nitrogen, at 0° C. The reaction was stirred for 17 hours before adding water (50 cm3). The organic layer was washed with water and 2M NaOH. The combined aqueous extracts were acidified with 10 M HCl and the precipitate extracted with dichloromethane. The combined organic extracts were dried (Na2SO4), filtered and concentrated in vacuo to afford a yellow-orange solid. An analytically pure sample was obtained by Kugelrohr distillation (0.01 mmHg/100° C.) to give a yellow solid m.p. 110-112° C.

1. washThe organic layer was washed with water and 2M NaOH
2. extractionthe precipitate extracted with dichloromethane
3. dry with materialThe combined organic extracts were dried (Na2SO4)
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customto afford a yellow-orange solid
7. customAn analytically pure sample was obtained by Kugelrohr distillation (0.01 mmHg/100° C.)