2,2,2-Trifluoroethanol → N-(3-(3-(4-((2,2,2-Trifluoroethoxy)methyl)phenyl)-4,5-dihydro-5-oxo-1,2,4-triazol-1-yl)-4-chlorobenzyl)pivalamide

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Reaction Steps

To a solution of 2,2,2-trifloro ethanol (0.042 g, 0.410 mmol) in THF was added NaH (0.017 g, 0.041 mmol) at 10° C. and continued stirring at RT for 1 h. Then solution of N-(3-(3-(4-(bromomethyl)phenyl)-4,5-dihydro-5-oxo-1,2,4-triazol-1-yl)-4-chlorobenzyl)pivalamide (Intermediate-103, 0.100 g, 0.041 mmol) in THF and TBAI (0.004 g, 0.0012 mmol) were added to the reaction mixture. The reaction mass was refluxed for 2-3 h. The reaction mass was quenched in ice and pH adjusted to 6-7 and extracted with DCM. The organic layer was dried over anhydrous sodium sulphate and concentrated to afford 0.060 g of desired product. 1H NMR (300 MHz, DMSO d6): δ 1.12 (s, 9H), 4.11-4.17 (m, 2H), 4.28 (d, J=5.4 Hz, 2H), 4.71 (s, 2H), 7.28 (d, J=9.0 Hz, 1H), 7.41 (s, 1H), 7.46 (d, J=7.8 Hz, 2H), 7.57 (d, J=8.1 Hz, 1H), 7.85 (d, J=8.1 Hz, 2H), 8.18 (t, 1H); MS (m/z): 497.31 (M+H)+.

Provenance & Evidence