Reaktion #49961

Reaktionsgleichung

Methyl 3-phenyl-1-adamantaneacetate

Nitronium tetrafluoroborate

→

methyl 3-(4-nitrophenyl)-1-adamantaneacetate

Lösungsmittel

acetonitrile

acetonitrile

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturcooled in an ice bath
2. 2
   workup.STIRRINGThe reaction was stirred for 45 minutes
3. 3
   workup.ADDITIONafter the addition
4. 4
   FiltrationThe resulting solid was collected by filtration
5. 5
   Sonstigedried in vacuo

Vorschrift

Methyl 3-phenyl-1-adamantaneacetate, example 1, (78.8 g) was dissolved in acetonitrile (800 mL) and cooled in an ice bath while stirring under a nitrogen atmosphere. Nitronium tetrafluoroborate (40.8 g) in acetonitrile (800 mL) was added dropwise over 45 minutes. The reaction was stirred for 45 minutes after the addition, then poured into ice (985 g). The resulting solid was collected by filtration and dried in vacuo to give methyl 3-(4-nitrophenyl)-1-adamantaneacetate (55.9 g). Mass spectrum: (M+NH4)+@347. Extraction of the aqueous phase with t-butyl methyl ether (2×800 mL) yielded additional material including the lesser products, methyl 3-(2-nitrophenyl)-1-adamantaneacetate; Mass spectrum: (M+NH4)+@347 and methyl 3-(2,4-dinitrophenyl)-1-adamantaneacetate; Mass spectrum: (M+NH4)+@392.

Quelle