2-Chloro-6-(1-piperazinyl)pyrazine → 2-(3-Thienylmethoxy)-6-(1-Piperazinyl)Pyrazine

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

The title compound was prepared according to the procedure of Example 20 starting from 3-thiophenemethanol (6.05 g, 53.0 mmol), K-t-BuO (0.897 g, 7.99 mmol) and 6-chloro-2-(1-piperazinyl)pyrazine (0.845 g, 4.25 mmol: obtained in Example 13, step 2). The reaction mixture was stirred at 105° C. for 7.5 h. Following chromatography on silica, solvents were evaporated off. The remaining oil was redissolved in ethyl acetetate and filtered through a short plug of alumina (5×3 cm) using ether/MeOH (96:4) as eluent. Solvent removal in vacuo gave 0.76 g (64%) of the title compound as a colorless oil. HRMS m/z for C13H16N4OS (M)+ calcd for 276.1045, found 276.1037. Anal. (C13H16N4OS.0.25 H2O) C, H, N.

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