تفاعل #1669960

معادلة التفاعل

acetic anhydride

1-Indanone oxime

imidazole

sodium carbonate

acetic anhydride

→

solid

المردود 61.3%

N-Acetyl-3-amino-1H-indene

المردود 61.3%

المذيبات

acetonitrile

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةto reflux under nitrogen
2. 2
   workup.WAITAfter 2 hours the mixture was allowed
3. 3
   درجة الحرارةto cool
4. 4
   workup.STIRRINGstirred for 15 minutes
5. 5
   استخلاصThree-fold extraction with ethyl acetate
6. 6
   أخرىdrying
7. 7
   أخرى(MgSO4) and evaporation
8. 8
   workup.WAITleft a brown oil which
9. 9
   أخرىwas reevaporated with toluene

الإجراء التجريبي

1-Indanone oxime (2.33 g, 0.016 moles) and imidazole (78 mg) in acetonitrile (45 ml) cooled in ice, were treated with acetic anhydride (11 ml, 0.12 moles) and the mixture thus stirred for one hour. Titanium triacetate (17 g) was added, followed by more acetic anhydride (11 ml, 0.12 moles). The mixture was brought to reflux under nitrogen. After 2 hours the mixture was allowed to cool, poured into 1M sodium carbonate (250 ml) and stirred for 15 minutes. Three-fold extraction with ethyl acetate, drying (MgSO4) and evaporation left a brown oil which was reevaporated with toluene. The brown residue was subjected to flash chromatography on silica gel with ethyl acetate/hexane 1:2 v/v. The major component was obtained as a white solid (1.7 g) from the appropriate fractions and was recrystallized from ethyl acetate/hexane to give the title compound, mp 137-138° C. (1.45 g, 52.9%).

المصدر