Triethylamine → 2-Phenethyl-5-pyridin-2-yl-2H-pyrazol-3-ylamine

참여 물질

반응 단계

To a stirred solution of 3-oxo-3-pyridin-2-yl-propionitrile (0.46 g, 3.1 mmol; CAS 54123-21-6) at r.t. in EtOH (10 ml) under an argon atmosphere were added triethylamine (2.6 ml, 18.9 mmol) and phenelzine sulfate salt (2.2 g, 9.4 mmol). The mixture was heated to reflux and stirring was continued for 2 hrs. The orange solution was cooled to r.t. The solids were filtered off. The filtrate was concentrated to leave an orange viscous oil which was taken up in EtOAc and washed with water. The aqueous layer was extracted with EtOAc and with CH2Cl2/MeOH 9:1. The combined organics were dried over MgSO4, filtered and concentrated. The product was obtained after silica gel chromatography using CH2Cl2/MeOH as gradient as off-white solid (0.722 g, 87%). MS: M=265.1 (M+H)+

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