Tert-butyl N-[(4-cyanophenyl)methyl]-N-[(2-methylpropan-2-yl)oxycarbonyl]carbamate → 4-(Aminomethyl)benzonitrile

HRID 1157385

Reaktionsgleichung

C(OC([N:8]([CH2:16][C:17]1[CH:24]=[CH:23][C:20]([C:21]#[N:22])=[CH:19][CH:18]=1)C(OC(C)(C)C)=O)=O)(C)(C)C>C(O)(C(F)(F)F)=O.ClCCl>[NH2:22][CH2:21][C:20]1[CH:23]=[CH:24][C:17]([C:16]#[N:8])=[CH:18][CH:19]=1

Komponenten

Reaktionsbedingungen

Temperatur: 25 °C

Versuchsvorschrift

4-(Di-tert-butoxycarbonylaminomethyl)benzonitrile (2 g, 6.0 mmoles) (prepared as described in Preparative Example 247, Step A above) was dissolved in TFA (4 mL) and the solution was stirred at 25° C. for 0.25 h. The reaction mixture was diluted with dichloromethane and extracted with 1N sodium hydroxide. The organic layer was dried (MgSO4), filtered and evaporated to dryness. The residue was chromatographed on a silica gel column (15×5 cm) using 3% (10% conc. ammonium hydroxide in methanol)-dichloromethane as the eluant to give 4-(aminomethyl)benzonitrile (108 mg, 68%): FABMS: m/z 133.1 (MH+); HRFABMS: m/z133.0764 (MH+). Calcd. for C8H9N2: m/z 133.0766; δH (CDCl3) 2.04 (2H, s, —CH2NH2), 3.89 (2H, s, —CH2NH2), 7.40 (2H, d, Ar—H) and 7.59 ppm (2H, d, Ar—H); δC (CDCl3) CH2, 45.7; CH, 127.8, 127.8, 132.4, 132.4; C, 110.6, 118.9, 148.0.

Aufarbeitung

extractionextracted with 1N sodium hydroxide
dry with materialThe organic layer was dried (MgSO4)
filtrationfiltered
customevaporated to dryness
customThe residue was chromatographed on a silica gel column (15×5 cm)

Quellen und Nachweise

ORD-Eintrag: ord-dae5f173499f4a58bd57863387b653d7
Quelldatensatz: uspto-grants-2010_10
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07807683B2

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