Cl[CH2:2][C:3]1[S:7][C:6]([C:8]2[CH:13]=[CH:12][CH:11]=[C:10]([C:14]([F:17])([F:16])[F:15])[CH:9]=2)=[N:5][C:4]=1[CH3:18].C(=O)(O)[O-].[Na+].C(OCC)(=O)C.[C:30](#[N:32])C>[C-]#N.C([N+](CCCC)(CCCC)CCCC)CCC>[CH3:18][C:4]1[N:5]=[C:6]([C:8]2[CH:13]=[CH:12][CH:11]=[C:10]([C:14]([F:17])([F:16])[F:15])[CH:9]=2)[S:7][C:3]=1[CH2:2][C:30]#[N:32]Tetrabutylammonium cyanide (1.44 g, 5.4 mmol) was added to a solution of 5-chloromethyl-4-methyl-2-(3-trifluoromethyl-phenyl)-thiazole (1.2 g, 4.1 mmol) in acetonitrile (27 ml). The solution was stirred at ambient temperature for 16 h, saturated aqueous sodium bicarbonate solution/ice water 1/1 and ethyl acetate were added and the layers were separated. The aqueous layer was extracted with ethyl acetate, the combined organic layers were washed with ice water/brine 1/1, dried over sodium sulfate and the solvent was evaporated in vacuo to give brown oil which was purified by column chromatography (silica gel, pentane/ethyl acetate) to yield 700 mg (2.5 mmol, 60%) of the title compound as orange oil.
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